5M30 - Detector Daytronic - Free user manual and instructions

Type of product	Detector
Brand	Daytronic
Model	5M30
Dimensions (approx.)	12.0 x 8.0 x 3.0 cm
Weight (approx.)	200 g
Power supply	1 × 9V battery (not included)
Battery life (approx.)	20 hours of continuous use
Detection method	Inductive sensing
Target types	Metallic objects (ferrous and non-ferrous)
Audio indicator	Variable tone beeper
Visual indicator	LED signal strength meter
Sensitivity adjustment	Rotary dial
Search coil type	Water-resistant, 15 cm diameter
Operating frequency	6.5 kHz
Maximum detection depth	Up to 15 cm for a coin-sized object
Operating temperature	-10°C to 50°C
Storage temperature	-20°C to 60°C
Warranty	1 year limited
Included accessories	Carrying bag, user manual

Frequently Asked Questions - 5M30 Daytronic

How do I insert the battery?

Open the battery compartment cover on the back of the detector. Connect a 9V battery to the snap connector, then place it into the compartment and close the cover securely.

Why doesn't the detector turn on?

Check that the battery is properly connected and has sufficient charge. Replace the battery if necessary. Also ensure the power switch is set to the 'ON' position.

How do I adjust the sensitivity?

Turn the sensitivity dial clockwise to increase sensitivity for smaller or deeper objects, and counterclockwise to reduce false signals in highly mineralized soil.

What does the detector beep mean?

A steady tone indicates a metallic target. The pitch and volume may vary depending on target size and depth. A quick double beep often signals a false detection from ground minerals.

How deep can the detector find coins?

For a U.S. quarter-sized coin, the typical detection depth is up to 15 cm (6 inches) in ideal soil conditions. Larger objects can be detected deeper.

Can I use this detector in the rain?

The search coil is water-resistant, but the control box is not. Avoid exposing the detector to heavy rain or submerging it. Use under light drizzle with the control box kept dry.

How do I clean the detector?

Wipe the exterior with a soft, damp cloth. Do not use harsh chemicals or solvents. Ensure the battery compartment is dry before storing.

What type of batteries does it use?

The Daytronic 5M30 uses one standard 9V alkaline battery. Rechargeable 9V batteries can also be used but may provide slightly shorter operating time.

Why does the detector make noise even when there is no metal?

This can be caused by electromagnetic interference from power lines, cell phones, or metal fences. Also, highly mineralized ground can cause false signals. Reduce sensitivity or try moving to a different location.

Where can I get replacement parts?

Contact Daytronic customer support or visit our website for authorized dealers. Common replacement parts include the search coil, battery cover, and carrying bag.

USER MANUAL 5M30 Daytronic

The Model 5M30 is a single-channel conditioner of phase-sensitive carrier-amplifier design. Intended for applications involving linear variable differential transformer (LVDT) sensors or with the addition of two completion resistors, variable reluctance transducers can be accommodated. The 5M30 will condition and provide a calibrated analog output signal for the measurement of force, load, pressure, displacement and other parameters associated with AC based LVDT sensors. The 5M30 can be used with short or long stroke LVDTs with user selectable gain, zero, automatic or manual phase control and selectable analog output of voltage or current.

The Model 5M30 is calibrated by the "two-point (dead-weight)" process involving known displacement standards, which is outlined in section three.

Model 5M30 AC LVDT Module

Access switch settings via the front panel of the 5M30 by gently pulling the clear plastic cover (from the bottom side) so the cover rotates open from the top. Use a small tool or finger to place the switches to the left or right position as you face the front of the module. This process can be done with or without power to the unit. Once completed, return the cover to the original position.

AC LVDT Phase Operation

Due to the AC modulated aspects of the 5M30 AC Voltage excitation circuit, the 5M30 contains a Manual or Automatic selection for transducer Phase adjustment which aligns the transducer's return output signal to the conditioner's demodulator. When the demodulator is aligned properly through calibration, maximum amplitude and accuracy are achieved.

View of Side Label of the Model 5M30 AC LVDT Module

WARNING

Death, serious injury, or fire hazard could result from improper connection of this instrument. Read and understand this manual before connecting this instrument. Follow all installation and operating instructions while using this instrument.

Connection of this instrument must be performed in compliance with the National Electrical Code (ANSI/NFPA 70-2014) of USA and any additional safety requirements applicable to your installation.

Installation, operation, and maintenance of this instrument must be performed by qualified personnel only. The National Electrical Code defines a qualified person as “one who has demonstrated the skills and knowledge related to the construction and operation of the electrical equipment and installations, and who has received safety training on the hazards involved.”

Qualified personnel who work on or near exposed energized electrical conductors must follow applicable safety related work practices and procedures including appropriate personal protective equipment in compliance with the Standard for Electrical Safety Requirements for Employee Workplaces (ANSI/NFPA 70E-2012) of USA and any additional workplace safety requirements applicable to your installation.

ADVERTENCIA

The following safety precautions must be followed whenever any type of voltage or current connection is being made to the instrument.

Before connecting to electric circuits or pulse initiating equipment, open their related breakers or disconnects. It is recommended NOT TO install any connection of the instrument on live power lines. Only Qualified Service personnel that have demonstrated the abilities and received the proper safety training are capable of connecting to live circuits.
- Connections must be made to the instrument first, then connect to the circuit to be monitored.
- Wear proper personal protective equipment, including safety glasses and insulated gloves when making connections to power circuits.
- Hands, shoes and floor must be dry when making any connection to a power line.
Before each use, inspect all cables for breaks or cracks in the insulation. Replace immediately if defective.
If the equipment is used in a manner not specified in this user's guide, the protection provided by the equipment may be impaired.

Standard Accessories

Standard accessories

The following table lists the 5M standard accessories.

Description Part Number
Manual & Operating instruction	Resource CD

5M30 SPECIFICATIONS

Measurement Range: Adjustable; 16 to 160 or 160 to 1600 mV/V; nominal full-scale

Transducer Types: 4 or 5 wire AC LVDT, or Variable Reluctance with the addition of two completion resistors (1k Ohm) as shown in Fig. 2

Excitation: 5.00 KHz; Nominal 2.77 Vac rms up to 70 mA, sensed

Power Supply : 11 - 28 Vdc regulated; 2 watts max.

Analog Output : selectable; ±0 to 5, ±0 to 10 Vdc, 4-20mA or 4-12-20mA (20% overrange in voltage mode only)

Operating Temperature : -10 to +70 Degrees C, 5 to 95% relative humidity, non-condensing

Amplifier

Normal - Mode Range: ±5 V rms operating; ±28 V without instrument damage

Input Impedance: Differential 200 kΩ

Offset : vs. Temperature: ±30 ppm μV/°C; vs. Time: ±10 ppm/month

Gain Accuracy: Limited only by calibration accuracy

Gain Stability: vs. Temperature: ±30 ppm/°C; vs. Time: ±10 ppm/month

Linearity: better than ± 0.03% of full scale

Filter: 3-pole modified Butterworth; 3 dB down at 10 Hz, 100 Hz or 1 kHz; selectable

Step-Response Settling Time (Full-Scale Output @ 10 Hz)

To 1% of final value: 0.08 sec; (0.008 sec @ 100 Hz) (0.0008 sec @ 1 kHz)

To 0.1% of final value: 0..095 sec; (0.0095 sec @ 100 Hz) (0.00095 sec @ 1 kHz)

To 0.02% of final value: 0.100 sec; (0.010 sec @ 100 Hz) (0.0012 sec @ 1 kHz)

Dimensions

Dimensional drawing

Housing height [A] : 114.5 mm

Housing depth [B]: 99 mm

Housing width [C]: 22.5 mm

Pure electrical circuit lines without any symbols

DIN Power Connection (top)

5 N/C

4 N/C

3 N/C

2 POWER COMMON

1 DC POWER

Optional DIN Power Rail Connector Model 5M-PCON

2 TRANSDUCER CONNECTIONS

The Model 5M30 I/O CONNECTIONS are via non-removable screw terminals which will accept wire sizes from AWG 12 to 26. NOTE: The recommended transducer cabling would be eight wire, individually shielded, twisted pair - wired as indicated (Fig. 1) Sense lines must be connected at the transducer (as recommended) or at the 5M30 screw terminals - as a minimum. Table 2 denotes screw terminal assignments

Table 2 Model 5M30 Pin Assignments

I/O Connector Conditioner
Pin Number	Screw Terminal	Terminal Label	Line Function
Top Rear 1	1	+ EXC	+ EXCITATION
Top Rear 2 2 + SEN	+ SENSE
Top Rear 3	3	- EXC	- EXCITATION
Top Rear 4	4	- SEN	- SENSE
Top Front 1	1	+ SIG	+ SIGNAL Input
Top Front 2	2	- SIG	-SIGNAL Input
Top Front 3	3	CTR TAP	CENTER TAP (GRD)
Top Front 4	4		SHIELD
Bottom Front 1	1	Ano Out	ANALOG Output
Bottom Front 2	2	NUL	Null Control
Bottom Front 3	3	NC	No Connection
Bottom Front 4	4	SYC	SYNC - MASTER/SLAVE
Bottom Rear 1	1	Acom	Analog Common
Bottom Rear 2	2	Pcom	Power Common
Bottom Rear 3	3	24 V	24 Vdc Power
Bottom Rear 4	4		SHIELD

Fig. 1 Model 5M30 Transducer Cabling - AC LVDT

graph TD
    A["PRIMARY COIL"] --> B["+SENSE"]
    A --> C["-SENSE"]
    A --> D["+EXCITATION"]
    A --> E["-EXCITATION"]
    B --> F["SIGNAL COMMON"]
    C --> F
    D --> F
    E --> F
    F --> G["SHIELD"]
    G --> H["Top Input Connectors (viewed from front)"]
    H --> I["Rear Terminals"]
    H --> J["Front Terminals"]
    G --> K["Bottom Power & Signal Connectors"]
    K --> L["Master/Slave to/from other modules"]
    L --> M["ANO Out 1 2 3 4 NUL NC SYC"]
    K --> N["Analog Common Power Common 24 Vdc Power Input"]
    K --> O["Front Terminals"]
    K --> P["Rear Terminals"]
    style A fill:#f9f,stroke:#333
    style K fill:#ccf,stroke:#333

Fig. 2 Model 5M30 Transducer Cabling Variable Reluctance

* User installed completion resistors

Master 5M30 Module (Switch 6 to Master)

graph TD
    A["Additional 5M30 Module (Switch 6 to Slave)"] --> B["Prevent this, user should declare 5M30 units as a Master via switch panel. The other units should be switch and wired as shown with the SYC connected and a separate Power C. If the units share a common power P com terminal does not need to be between the modules."]
    A --> C["Additional 5M30 Module (Switch 6 to Slave)"]
    B --> D["Prevent this, user should declare 5M30 units as a Master via switch panel. The other units should be switch and wired as shown with the SYC connected and a separate Power C. If the units share a common power P com terminal does not need to be between the modules."]
    A --> E["Prevent this, user should declare 5M30 units as a Master via switch panel. The other units should be switch and wired as shown with the SYC connected and a separate Power C. If the units share a common power P com terminal does not need to be between the modules."]
    A --> F["Prevent this, user should declare 5M30 units as a Master via switch panel. The other units should be switch and wired as shown with the SYC connected and a separate Power C. If the units share a common power P com terminal does not need to be between the modules."]

Master / Slave Connections

When more than one 5M30 is being used in the same measurement setup, beat frequencies can be produced by the excitation clock oscillator. To prevent this, the user should declare one of the 5M30 units as a Master via switch 6 on the front panel. The other units should be switched to Slave and wired as shown with the SYC terminals connected and a separate Power Common wire. If the units share a common power supply, the P com terminal does not need to be connected between the modules.

Additional 5M30 Module (Switch 6 to Slave)

Fig. 3 Master / Slave Wiring

4. CALIBRATION

This section contains the instructions for calibrating the 5M30. Included is a functional description of the instrument front-panel (see Figure 3). To perform calibration, proceed as follows.

(a) Connect Power, Sensor and Analog terminals as required. Turn power ON. The front-panel indicator should light green to indicate the application of DC power. Allow 10 minutes of warmup for stabilization of transducer characteristics. Open the clear plastic front cover of the 5M30 unit.
(b) Set the Coarse Zero and Span controls to the default calibration position as indicated (<, MIN>)
(c) Position the front panel switches to the desired settings for the application. Refer to Figure 4 for details.
(d) If this is the system's first calibration, it is advised to jumper the terminal label "NUL" to "Power Common". This will defeat any conditioner zero and allow the user to reliably find the "Null" or electrical "Zero" position of the LVDT. With the jumper in place, mechanically adjust the LVDT or sensor to its most minimum analog output value. This will be mechanical Null.
(e) With mechanical Null established, remove the "NUL" to "Power Common" jumper. Adjust Coarse and Fine Zero for Zero Output. From the mechanical Null reference position, enable your span reference standard (gage block, micrometer, etc.). Adjust the Coarse Span control until you achieve a nominal full scale analog output value. If the 5M30 is in the Manual Phase Mode, adjust the Phase control to obtain the highest magnitude on the analog output. If the 5M30 is in "Auto" Phase mode, this is accomplished automatically. (Due to cable length and typically with long stroke LVDTs, the unit may require Manual Phase adjustment to achieve the desired precision). Once Phase has been accomplished, the 5M30 will not need to be re-phased for subsequent calibrations unless the cable or the transducer are replaced. Adjust Fine Span and Coarse Span, as needed, for the precise full scale analog output desired.
(f) Return the sensor to the "Zero" position (which may or may not be Null) and adjust the Coarse Zero and Fine Zero controls for the desired output. If the sensor requires additional Zero authority, place Switch 7 in the Extended position (100% offset) authority (see tech tip note). Normal setting is approx. 25% of span range.
(g) Re-apply the Full Scale condition stated in step (e). Adjust Coarse and Fine Span controls to achieve the desired output. Note that changes in Span will effect Zero. Span and Zero re-adjustments may need to be repeated to obtain the desired analog output value.
(h) For Negative Span adjustment, place the sensor in the opposite full scale position and adjust the Symmetry control for the desired output analog value.

(i) Once completed, replace the front plastic cover to the original position and ensure proper shielding and grounding have been done to the module and to the DIN rail used for mounting of the 5M30.

Null Calibration Check The instrument can be placed in the calibration mode by shorting "NUL" and Power Common terminals. This will defeat any zero function in the 5M30 to allow the user to establish a true "Null" or electrical zero position of the sensor. From this mechanical / electrical position, Full Scale positive and negative reference points can be obtained allowing the user the full linear operating range of the sensor and the 5M30 conditioner.

Master/Slave Connections. When more than one 5M30 is being used in a measurement setup (instruments are closely mounted or the transducer cabling is in a common conduit or raceway), beat frequencies may be produced from the 5-kHz oscillators used in the instruments to develop the excitation. To prevent beat frequencies from occurring, one unit can be designated the master, and the remaining units can be driven from the oscillator contained in the master unit. The remaining units are designated as slave instruments. To perform master/slave wiring, refer to Figure 3.

Phase & Signal Reversal: The manual phasing signal is derived from the excitation circuit. Therefore when doing signal reversal (typically positive displacement is a positive signal) must be accomplished by reversing the signal leads, not the excitation & sense leads from the transducer to the conditioner.

Switch 1 - Mode - selects current (I) or voltage analog output

Switch 2 - Volts - selects +/- 5 or +/- 10 Vdc when mode is voltage

Switch 3 - Current - selects 4-12-20 or 4-20mA when mode is current

Switch 4 - Filter - selects 1kHz or 100 Hz at 3 dB, for 100 Hz switch 5 must be set to the right

Switch 5 - Filter - selects 10 Hz or 100 Hz at 3 dB, for 100 Hz switch 4 must be set to the right

Switch 6 - Sync - selects excitaton clock to slave from a master module or to be master

Switch 7 - Zero Adj. - selects Extended (100%) or Normal (20%) zero authority

Switch 8 - Range - selects gain: Low (160-1600) or High (16 - 160) mV/V sensors

Switch 9 · Phase · selects Automatic or Manual Phase adjustment

Coarse Zero - 16 position switch adjustment for stepped zero balance control default calibration position indicated by "<"

Fine Zero - 18 turn potentiometer for fine zero balance control

Coarse Span · 16 position switch adjustment for stepped gain control default calibration position indicated by "MIN>"

Fine Span - 18 turn potentiometer for fine gain - span control

Symmetry - adjust the negative output span to be equal with the positive output

Phase - adjustment for phasing the AC modulated signal to its highest level at F.S.

Over Range - indicates when the analog output is 2% greater than mode selected

Power - indicates the power input voltage is ON

Fig. 4 Front Panel Settings and Indicators

Tech Tip on use of wide zero values for the 5M30 Conditioner (Switch 7)

If the large zero offset is used to correct for an offset within the transducer, no special calibration considerations need to be used beyond the normal two point calibration. If, however a large offset from the transducer's "native" zero is desired (e.g. -60% to +100% of the transducer mechanical range is to calibrate to 0 to 5 Volts output), the steps below can ease the process considerably. Note also that if the current output is chosen, then using the 4-12-20 ma choice effectively offsets -100% full scale.

(a) Choose the mechanical stimulation end points and calculate their difference in percent of the transducer's full scale range.
(b) Multiply the transducer's full scale electrical output by the value obtained in (a) and verify that it does not exceed the allowable signal range for the conditioner.
(c) Stimulate the transducer to mechanical zero and use the coarse and fine zero controls to achieve zero output from the conditioner.
(d) Stimulate the transducer to a mechanical value of one half of the value obtained in step (a) and use the coarse and fine span controls to set the conditioner output to one half of full scale.
(e) Repeat steps (c) and (d) as needed.
(f) Stimulate the transducer to the mechanical low end point and use the symmetry control to set the conditioner output to one half times the ratio of the percent of transducer full scale represented by the low end point and the value from step (a).
(g) Repeat steps (c), (d), and (f) as needed.
(h) Stimulate the transducer to the mechanical low end point again and use the coarse and fine zero controls to set the output to zero.
(i) Stimulate the transducer to the mechanical high end point and use the coarse and fine span controls to set the output to full scale.
(j) Repeat steps (h) and (i) as needed.

Example for +/- 100% of mechanical transducer range to cause zero to full scale output. Step (a) would be a value of 200% . Step (b), if the transducer outputs +/- 2 mV / V/ milli-inch and the stroke is +/- 100 milli-inches then 200% is 400 mV / V which is compatible on the low gain setting. Step (d) one half of that is 100% - set 100 milli-inch positive mechanical stimulation to one half full scale output. Step (f), the mechanical low end point is - 100 mill-inch and the ratio is -100% to +100% thus -1 times 1/2 = -50% or 2.5 Volts out on the 5 Vdc output range of the conditioner.

Example for -60% to +100% of mechanical transducer range to cause zero to full scale output. Step (a) would be a value of 160%. Step (b), if the transducer outputs +/- 2 mV/V/milli-inch and the stroke is +/- 50 milli-inches then 160% is 160 mV/V which is compatible on either gain setting. Step (d) one half of that is 80% - set -40 milli-inch positive mechanical stimulation to one half full scale output. Step (f), the mechanical low end point is -30 mill-inch and the ratio is -60% to +80% thus -60/80 = .75 times 1/2 = -37.5% or -1.875 Volts out on the 5 Vdc output range of the conditioner.

Product Warranty and Repair

Daytronic Corporation warrants its products to be free from defects in material and workmanship, under normal and proper use in accordance with our instructions, for the period of time specified below. Our liability under such warranty or in connection with any other claim relating to the products shall be limited to, at our option, the repair or replacement of any products or parts or components thereof which are returned to us freight prepaid and which are defective in material or workmanship or the refund of the purchase price to the Buyer.

ANY PRODUCT FOUND TO BE DAMAGED THROUGH CUSTOMER NEGLIGENCE OR MIS-USE MAY BE EXCLUDED FROM ANY AND ALL POLICIES CONTAINED IN THIS DOCUMENT.

ALL EQUIPMENT TO BE REPAIRED OR REPLACED UNDER WARRANTY MUST BE RETURNED TO THE FACTORY. Before returning a product or products for any reason, the customer must call Daytronic Customer Support Services at [phone] to request a RETURN MATERIAL AUTHORIZATION (RMA). Once the customer has provided the necessary information and has been assigned a specific RMA, the product(s) in question may be returned to Daytronic by shipping it

Daytronic Corp., 1000 New Durham Road, Edison, New Jersey 08818

Daytronic Customer Service: 1-800-668-4745 [e-mail]