Manual

Rev. 3
7
Introduction
Specifications
1.6 Model 135/136 Specifications @ 25
°
C
Level Measurements
Resolution: 0.1%, 0.1 cm, or 0.1 in
Accuracy
a
: ± 0.5% of active sensor length
Linearity: ± 0.1%
Sensor Current: 75 mA nominal
Sensor Voltage: approx. 70 VDC for 80" active sensor length
Operating Parameters
HI and LO Alarms: 0% to 100% adjustable
HI/LO Alarm Relay Contact Ratings: 10 VA, 30 VAC or 60 VDC, 0.5 A
(normally open, closed on alarm)
Sample-and-Hold Period: 0.1 to 600.0 minutes or hours
A and B Control Setpoints:
0% to 100% adjustable
Controller Output:
AC line voltage @ 1A max current
Fill Timer:
0.1 to 600.0 minutes or hours
0-10 Volt Analog Output
Integral Non-linearity: ± 0.012%
Resolution: 16 bits
Total Error: ± 1.1% for 0-10 V output
Voltage Drift (0-10 V): 100 ppm / °C
4-20 mA Analog Output @ 24 V
V
ext
Supply Range: 13-32 VDC (see Appendix for diagram)
Integral Non-linearity: ± 0.012%
Resolution: 16 bits
Total Error: ± 0.25% for 4-20 mA output
Current Drift (4-20 mA): 75 ppm / °C
PSRR: 10 µA / V
Power Requirements
Primary
b
:
100-120 or 200-240 VAC ±10%
50 - 60 Hz
Maximum Current: 50 VA for Model 135
1.3 A for Model 136