POTENTIOMETER INPUT TRANSMITTERS
PLUG-IN MODULES, FIXED RANGE

transmitter

JH4003: Potentiometer Input, Nonisolated 
JH4003I: Potentiometer Input, Input/Output Isolated

    • Potentiometers from 100 ohms to 100Kohms
    • Offset and Expanded Range Capabilities
    • Quick-Check Red/Green Output LEDs
    • Industry Standard Pinouts (8-Pin Socket)
    • AC or DC Power Options

    JH4003/JH4003I
    PDF
    DATA SHEETS

Models JH4003 and JH4003I provide a DC output proportional to the position of a potentiometer or slidewire wiper. Both are fixed-range devices, factory set, but you may specify 0/100% input travel or any expanded range covering a 10% or wider portion of the travel.

Red-green Quick-Check LEDs give a quick indication of the relative output. Red is brighter at the low end, green at high, while at mid-scale both are approximately equal. Red-only indicates offscale low while green-only indicates offscale high.

Available options include input/output isolation (Model JH4003I), AC or DC power choices and reverse-action Option RT (decreasing output with increasing input).

ORDERING INFORMATION

Model Number: 

Select JH4003 (nonisolated) or JH4003I (input-output isolated). Add suffix –AC for AC power or –DC for DC power.
Input Potentiometer: 

It is not necessary to specify the potentiometer’s resistance. Just make sure it is no less than 100 ohms nor more than 100Kohms.
Input Range: 

Specify 0/100%, or any 10% or wider portion of the travel (for example, 60/70%).
Output Range: 

Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below.
Power: 

Specify 115Vac, 230Vac, 12Vdc or 24Vdc.
Reverse-Acting Transmitter (decreasing output with increasing input): 

Specify Option RT.
Loop-Powered Output: 

4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Specify Option LPO.

INSTALLATION AND CONNECTIONS

These transmitters plug into any standard 8-pin circular ("octal") relay socket. JH Technology offers two sockets: DS008 for DIN-rail or surface mounting and ST008 for Snap-Track mounting (see the Accessories page). Pin connections are:

Pin 1: Power (AC or, if DC power option, DC plus).
Pin 2: No connection.
Pin 3: Power (AC or, if DC power option, DC minus).
Pin 4: Potentiometer ccw (0% travel).
Pin 5: Potentiometer wiper.
Pin 6: Potentiometer cw (100% travel).
Pin 7: Output plus.
Pin 8: Output minus.

DETAILED SPECIFICATIONS

Input Potentiometer:  

May be any resistance between 100 ohms and 100Kohms. It is not necessary to specify the potentiometer resistance on your order: end-to-end resistance does not affect the calibration.
Input Capabilities:  

0 to 100% travel, or any 10% or wider portion of the travel (for example, 35/45%).
Voltage Output Capabilities:  

1 volt minimum output span, -10 to +15V absolute limit. Offset ranges are allowed. Maximum output load, 10mA (1Kohm at 10V output).
Current Output Capabilities:  

1mA minimum output span, 0 to +25mA absolute limit. Positive offsets are allowed, negative outputs are not. Output drive capability, 24V (1,200 ohms max. at 20mA output).
Accuracy (factory calibration):  

+/-0.1% of span, or better.
Adjustability:

Zero and span each are adjustable approx. +/-15% of span.
Linearity:  

+/-0.05% of span or better.
Response Time:

Under 100 milliseconds.
Isolation:  

Power, 1,500Vac rms (2,100V peak). Input/Output (JH4003I only), 1,000Vac rms (1,400V peak).
Guaranteed Operating Temperature:  

-10 to +60 deg. C (14 to 140 deg. F).
Temperature Stability:  

+/-0.02% of span per deg. C, or better.
Power Requirements:  

AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W.

 

 
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