Models T140-10" H2O T140-1 PSI T140-200" H2O T140-30 PSI T140-100 PSI T140-300 PSI T140-3000 PSI Hand-held Pressure Calibrator OPERATING INSTRUCTIONS
1. General Description The T140 is designed to be an accurate, easy to use pressure calibrator/manometer for a variety of pressure measuring applications. Its two port differential design allows the unit to be used in both gage and differential measurements providing a high degree of versatility. The T140 is capable of storing maximum and minimum pressure readings along with a hold function to freeze a reading if desired. 1.1 Customer Service Corporate Office: www.martelcorp.com e-mail: sales@martelcorp.
1.3 Safety information Symbols Used The following table lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual.
On Canadian Standards Association The following definitions apply to the terms “Warning” and “Caution”. • “Warning” identifies conditions and actions that may pose hazards to the user. • “Caution” identifies conditions and actions that may damage the instrument being used. Use the calibrator only as specified in this manual, otherwise injury and damage to the calibrator may occur. Warning To avoid possible electric shock or personal injury: • Follow all equipment safety procedures.
• When servicing the calibrator, use only specified replacement parts. • To avoid false readings, which could lead to possible personal injury, replace the battery as soon as the battery indicator appears. 3. Set-up Before beginning, become familiar with the keypad layout and the configuration of the pressure manifold connections. Note the location of the high and low pressure ports as indicated by the label on the rear of the calibrator.
5. Operating Procedure 1. Connect the desired 1/8NPT fitting to the pressure manifold. Note that for gage (positive pressure) measurements use the HIGH input port. If differential measurements are being made, both ports must be used with the higher of the two pressures going into the HIGH input port. The 300 and 3000 PSI versions have a single port since they operate as a gauge only device. 2. Turn on power and select the desired Engineering units you wish to use. Pressing the ENG.
6. The T140 can be used to hold a pressure reading to be viewed after the pressure has changed. Pressing the HOLD key enables the hold function, pressing HOLD again disables it. 6. Accuracy The T140 is checked against a NIST traceable reference before shipment to verify that it meets its accuracy specification. This accuracy is based at 25°C and error allowances must be made when operating at extreme temperatures. The specifications below list the stability and operating temperature range of the T140.
7. Specifications Range (Model T140-10") (Model T140-1) (Model T140-200") (Model T140-30) (Model T140-100) (Model T140-300) (Model T140-3000) -10 to 10" H2O -1 to 1 PSI -200" to 200"H2O (0-7PSI) -14 to 30 PSI -14 to 100 PSI -14 to 300 PSI -14 to 3000 PSI Accuracy @23 ±5°C 30/100 PSI, 200” 300/3000 PSI 10", 1 PSI ±0.05% F.S. ±0.05% of F.S. ±0.1% F.S.
8. Maintenance Generally, with normal usage, this calibrator should hold its rated specifications for at least 12 months. Beyond this, it should remain within 1.5X of its specification over its useful life, provided it is not abused or tampered with. If after the stated warranty period, the device falls out of calibration, it can be returned to Martel for re-calibration. Please call 1-800-821-0023 for pricing and return information. 9.
www.martelcorp.com e-mail: sales@martelcorp.
