Portable Rail Expansion Gap Meter

M 8111

Outline
The MODEL 8111 is a Portable Rail Expansion Gap Meter, which is used for manual
measurement of rail expansion gap and rail temperature.
This device is available for simple and convenient gap measurement and verification of gap
data in unused area of an automatic expansion gap measurement device.
The measurement section consists of gap measurement sensor, temperature measurement
sensor, and signal procession from a sensor.
This MODEL 8111 is available handy gap meter which is designed for high performance andscalabitity, by specialists in rail expansion gap measurement.

Features Easy to operate by large display and big operation buttons
 Available for accurate temperature measurement of rail leg by a separated temperature
sensor.
 Simple operation for gap and temperature measurement for easy using Has communication function with high-order system. And spots and line information are
simply displayed on LCD monitor
 Has alarm function to alert for forgetting to measure temperature Measured data is supervised by using PC

The battery is low power consumption and lasts longer

Specifications
Sensor section
Rail Expansion Gap Sensor
Temperature Sensor
Measurement method : Contact method, potentiometer
Measurement method
By inserting a triangular gauge toa gap, inserting value ismeasured by a potentiometer.
Measurement range
Measurement range : 0.0 to 20.0mm
Accuracy
Output voltage: 0.2V/mm
Dimensions
Dimensions
Triangular gauge : Angle 30° 40(H)x20(W)mm
Contact section
Handle : Φ38x200mm
HandleCable length : 500mm
Cable length
WeightWeight: Approx, 400ｇ
Measurement Section
BatteryRail gap
Range
Unit
Accuracy: 0.0 to 20.0mm: 0.1mm: ±0.5mm

DisplayWith chamfering correction function

Rail temperature
Range
Unit
AccuracyTime: -10 to 70℃: 0.1℃ (At data 1℃): In accordance with thespecification of the temperature
sensor: Within 3 seconds

Alarm
Temperature range

Atmosphere temp.
Range
Unit
Accuracy: Pressing method,thermocouple type K(Chromel – Alumel): -10 to 70℃: ±2℃（1 to 70℃）
: ±3℃（-10 to 0℃）: Φ15×20mm: Φ12×120mm: 650mm: Approx, 100g

: 2 units of AA alkaline battery(10 hours of continuous useat20℃): 20 characters by 4 lineson ＬＣＤ(10 characters in 2-byte)
With a backlight
Both LCD and backlight areautomatically turned off in nooperation for 20 seconds.): Warning alarmfor remeasurementof temperature: 0 to +50℃, 30 to 90％RH,
Without condensation: 158(H)x95(W)x46(D)mm,
Excluding projections: Approx, 500g

: 0 to 50℃
Dimensions: 0.1℃(At data 1℃): In accordance with theWeightspecification of the temperature
sensorCommunication with PCTime: Within 3 seconds
Protocol: RS-232C complianceDownload of spot breakdown information
Group selecting,Number of data63 at the maximumGroup measurement
Spots
Group selecting : 63 at the maximum
512 at the maximum per 1 group
Spots: 512 at the maximum per 1 group
Upload of measured data
Single measurement
Group selecting,Spots: 512 at the maximum
63 at the maximum
Spots
512 at the maximum per 1 group

Download of line information (by dedicated software)
Upload of single measurement (by dedicated software)
Accessories
2 units of AA alkaline battery, Instruction manual,
Dedicated software into CD-ROM
Options
RS-232C communication cable

NOTES: Specifications, design and so forth are subject to change without notice for further improvement07.11