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(4) Restore power to the unit.
If the continuity monitoring option was ordered, the shorted wire detection is
factory set to indicate fault condition upon the detection of the equivalent of
≈1000 μS water. If the water conductivity sense resistors are changed, the three
short-circuit resistors should be changed at the same time. Refer to figure 6,
location 7 and use the procedure outlined above.
6.0 Spare Parts
The following spare parts are recommended as a minimum set for stocking by the
user:
Probes:
12 point Single Module – stock 2
24 point Two Module – stock 4
36 point or more Systems – stock 6
1 Relay (requires pcb through hole soldering to replace)
A copy of this I.O.M.
Probes are available only as complete new assemblies.
Consult your Tyco or Penberthy distributor or TV&C-Prophetstown
for repair Modules.
7.0 Model 12B Specifications *
Standard Sensitivity:
≥ 1μSiemens (10 – 100 μS default)
Input Voltage: 105-130 Vac or optional
210-260 Vac – MOV protected
Frequency: 50-60 Hz
Power (max): depends on system configuration
80 VA dual transformer system
40 VA single transformer system
Output Voltage:
Probes: 12 Vac RMS maximum, resistor isolated
Relay Contact: 8 AMP 28 VDC
10 AMP @ 125 Vac (resistive)
UL & CSA: 10 AMP @ 250 Vac (resistive)
TÜV: 5 AMP @ 250 Vac (resistive)
Operating Temperature:
Electronics: 32 – 160°F [0°C –70°C]
FOR USE IN 121°F [50°C] MAXIMUM AMBIENT (without local display)
FOR USE IN 104°F [40°C] MAXIMUM AMBIENT (with local display)
Standard Column: 850°F [455°C] maximum
Standard Enclosure Rating: NEMA 4X [IP66]