MODEL 158A 909GF197B
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Section II - SPECIFICATIONS
2.1 ENVIRONMENTAL
Ambient Temperature Limits.......-40° F to +160° F
Vibration Limits ................± 2 G from 10 to 200 Hz
2.2 ELECTRICAL
Supply Voltage............. 120 VAC ± 10%, 50/60 Hz
240 VAC ± 10%, 50/60 Hz
26.5 VDC ± 10%
Supply Power........................... 5 watts, 7 VA max.
Terminal Capacitance Range ............ 0 to 1000 pF
Span Capacitance Range........ 10 pF plus 1 pF for
each 10 feet of Triax
cable up to 2000 pF
Maximum Recommended
Terminal/Span Ratio....................................... 10:1
Output Signal
and Load...................1-5 mADC into 0-2500 ohms
4-20 mADC into 0-700 ohms
10-50 mADC into 0-250 ohms
0-10 mADC into 0-1000 ohms
Connecting Cable Length .................150 feet max.
2.3 PERFORMANCE
Linearity .................................. 0.5% max. for span
less than 1000 pF
1% max. for span
greater than 1000 pF
Repeatability...............................................± 0.1%
Sensitivity......................................0.01% minimum
Frequency Response.........................-3 db at 1 Hz
Supply Variation Effect ...............0.5%/10% supply
Ambient Temperature Effect:
Span................................................0.01%/° F
Zero............................. 0.01%/F or 0.01 pF/F,
whichever is greater
Output Signal Ripple............................. 0.2% max.
Output Meter Accuracy.................................. ± 2%
2.4 ENCLOSURE
Water Tight ............... NEMA 4, CSA Enclosure 5,
Polyurethane painted cast aluminum
Explosion Proof...Class I, Division 1, Groups C, D;
Class II, Division 1, Groups E, F, G;
Polyurethane painted cast aluminum
Weatherproof ..... NEMA 12, 13, CSA Enclosure 3,
Polyurethane painted steel
2.5 INTRINSIC SAFETY
Models 158A – (A, B) (1, 2) – (A, B, C, D) – 1:
Probe circuit is CSA Certified intrinsically
safe for Class I, Division 1, Group C & D;
Class II, Division 1, Group E, F & G
hazardous locations when connected as
shown on drawing 907GA518 (Figure 8).
2.6 AGENCY CERTIFICATIONS
Models 158A – (A, B) (1, 2) – (A, B, C, D) – 1:
CSA Certified .............................File LR 18690
