SPECIFICATIONS
Basic Meter
INPUTS:
PD750: Field selectable: type J, K, T, E, R, or S Thermocouples with 1°
resolution; type T to 0.1° 100 Ω platinum RTD (.00385 or .00392 curve)
to 1° or 0.1° resolution.
PD751: 10 Ω copper RTD
PD752: 120 Ω nickel RTD
DISPLAY:
Bright, large, 0.56” (14.2mm) high efficiency red, 4
1
/
2
digits. F or C may
be switched on to indicate Fahrenheit or Celsius.
COLD JUNCTION REFERENCE:
Automatic, fixed, no user calibration needed.
SENSOR BREAK DETECTION:
Open sensor circuit indicated by display flashing
0pen
. All relays and alarm status LEDs go to alarm state.
HOLD READING:
Connect switch to ACK/HLD and COM terminals, also connect
jumper pins on rear.
ACCURACY:
See Thermocouple and RTD chart, page 11.
LOCKOUT:
Jumper JP2 at rear of instrument restricts modification of calibration
values.
INPUT IMPEDANCE:
Greater than 100 KΩ.
POWER:
AC power: 115 VAC ±10%, 50/60 Hz, 10 VA.
230 VAC ±10%, 50/60 Hz, 10 VA.
DC power: 22-28 VDC, 6 watts max.
ISOLATION:
AC power: 1500 VAC; DC power: 500 VDC.
NORMAL MODE REJECTION:
64 dB at 50/60 Hz
ENVIRONMENTAL:
Operational ambient temperature range: 0 to +60°C. Storage
temperature range: -40 to +85°C. Relative humidity: 0 to 90% non-condensing.
ENCLOSURE:
1/8 DIN, high impact plastic, UL 94V-0.
FRONT PANEL:
NEMA 4X, IP65, panel gasket provided.
WEIGHT:
19.7 oz (559 g) (including options)
CONNECTIONS:
Removable screw terminal block, accepts #22 to #12 AWG.
ALARM POINTS:
4, any combination of high or low alarms.
ALARM STATUS INDICATION:
Front panel LED
ALARM DEADBAND:
0-100% of full scale, user selectable.
UL FILE NUMBER:
E160849; 508 Industrial Control Equipment
(PD750 AC Powered Unit only)
4
Model PD750, PD751, PD752 Universal Temperature Meters
Instruction Manual
www.predig.com
