H-25C Instruction Manual
Instruction 3015-0216
21
2.3
Connecting the Probe
Connect the accessory probe to the “PROBE” connection socket on the instrument front panel and secure it
with the lock ring.
Note that the probe connection socket gas intake port is covered with a protective cap, which you must
remove before connecting the probe.
Note: The Model H-25C detector can be fitted with a probe to satisfy all needs.
2.4
Connecting the Power Cable
The power cable supplied with the instrument (length, 3 m) has a plug with a grounding pole. First, make
sure that an AC power receptacle (socket) compatible with this plug is available nearby. The power
consumption of this instrument is about 100 VA.
After making sure that you can obtain the line power for which the supply voltage selector switch is set,
connect the power cable to the connector on the rear of the instrument. Then connect the plug on the other
end to the AC power receptacle.
2.5
Applying Power (Turning the Power Switch ON)
Note When using this instrument, always keep in mind that it contains parts that operate at high
temperatures (the sensor), and circuits where high voltages are present, and take care to avoid burns and
electric shock. Also, be careful where you place the probe, so that you never allow it to such in any liquid.
When you first use the H-25C Halogen Leak Detector, you must adjust the calibration gas secondary
pressure within three minutes of the time that you apply power (if it has the auto calibration function). So,
before turning ON the power switch, remove the cover from the main unit.
Remove the cushioning material (sponge) inserted between the pump and the printed circuit.
The instrument will begin operating as soon as you turn the power switch ON. The power switch is turned
ON and OFF with a key. Insert the key supplied in the accessories into the power switch keyhole and turn
to the right (power switch ON).
When you apply power, the instrument will go immediately into warm-up mode. Per form the secondary
gas pressure adjustment at once (see Section 2.6).
