H-25C Instruction Manual
Instruction 3015-0216
8
Preparing for Use & Measurement and Calibration
Preparing for Use
Operation Remarks
1. Install the sensor
2. Set the switches
•
Supply voltage selector switch
•
Type-of-gas selector switch
•
Measuring units selector switch
(1) Measurement unit selection
(2) Contact status selection at alarm output
(3) Measurement mode ( A-type / B-type selection
•
Alarm point setting switches
•
Cal. Mode (auto / manual) selector switch
•
Cal. Request interval setting switch
•
Search mode sensitivity switch
3.
Connect the probe
4.
Connect the power cable
5.
Apply power (turn power switch ON)
6. Adjust cal gas secondary pressure (within 3 minutes after
power-ON)
7. Calibrate (at least 30 minutes after cal gas secondary
pressure adjustment)
8.
Adjust speaker tone volume
9.
Allow suction of air (Power OFF)
(See Section 2.1)
(See Subsection 2.2.1)
(See Subsection 2.2.2)
(See Subsection 2.2.3)
(See Subsection 2.2.4)
(See Subsection 2.2.5)
(See Subsection 2.2.6)
(See Subsection 2.2.7)
(See Subsection 2.2.8)
(See Subsection 2.2.9)
(See Section 2.3)
(See Section 2.4)
(See Section 2.5)
(See Section 2.6)
(See Chapter 3)
(See Section 2.8)
(See Section 2.9)
Factory setting: R134a
Factory setting: Std. ml/s
Applies if equipped with contact
output
Factory setting: A-type mode
(*1)
Factory setting: 4 hours
Factory setting: 5 times
Begin warm-up
Measurement and Calibration
Operator action
Data Display
Bar Graph Display
Speaker Tone
1. Apply power (turn
power switch ON)
Warm-up (180
seconds)
Ready for
measurement (search
mode)
.
(Displays all)
.
“H25”
.
Version No.
.
“180” – “0”
(Countdown)
Measured value (lit)
.
Pressure
kPa {kgf/cm
2
}
100% : 100 {1.0}
200% : 200{2.0}
.
(% value)
.
Continuous tone upon detection
2. Leak
detection
Leak location search :
Search mode
(probe switch OFF : not
pressed)
Leak flow measurement
: Pass/fail
Mode (probe switch ON
: depressed)
.
Measured value (lit)
.
Measured value (flashing
)
.
Search mode alarm Percent of
point (auto-zero operates at
20% or below)
.
Percentage of alarm point
.
Continuous tone upon detection
(10% or higher)
.
Intermittent tone upon detection
(100% or higher)
3. Calibration
(auto)
Insert probe into “CAL
PORT”
Pull probe out when
count reaches 0. (let
suck air)
Wait for sensor output
to stabilize.
Ready for
measurement (search
mode)
.”
CAL” (3 seconds)
.
”7” – “0”
(countdown)
.
”…”
.
Measured value (lit)
.
Pressure
.
Sensor sensitivity
.
(% value)
.
7 to 4 : Continuous tone
3, 2, 1 : Short tone
0 : Continuous tone
Note: The above table- shows the basic procedures for preparing to use the H-25C with auto calibration, and the measurement and calibration.
*1 : Check how measurements are made with the measurement mode set to A-type. Note that B-type mode is generally used for detecting leaks.