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Related Manuals for Instrutech Wasp WGM701
Summary of Contents for Instrutech Wasp WGM701
- Page 1 InstruTech® Cold Cathode Pirani Combination Vacuum Gauge WGM701 Module The Wasp™ User Manual InstruTech 1475 S. Fordham St. Longmont, CO 80503 Phone: +1-303-651-0551 Fax: +1-303-678-1754 E-mail info@instrutechinc.com www.instrutechinc.com p/n 002618-100...
- Page 2 In no event will InstruTech be responsible or liable for indirect or consequential damages that result from the use or application of this equipment.
- Page 3 Copyright © 2016 by InstruTech All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or by any information storage or retrieval system, except as may be expressly permitted in writing by InstruTech.
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Page 4: Table Of Contents
Setup and Operation ............................13 Gauge start up and operation ........................13 Sensor activation delay ..........................13 Status Indication ............................14 Gauge Adjustment ........................... 14 4.4.1 Pirani ATM adjustment ........................15 4.4.2 Pirani HV (zero) adjustment ......................15 InstruTech Page 1... - Page 5 Removing the gauge from service ......................20 7.4.1 Inspecting the sensor ........................21 7.4.2 Replacing the ionization chamber and sensor activation aid ............22 7.4.3 Replacing the measuring chamber ....................24 Troubleshooting ............................25 Factory Service and Support ..........................26 Warranty ................................26 InstruTech Page 2...
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Page 6: Introduction / General Information
0 to 70% relative humidity, non-condensing bakeout temperature (at flange) C (sensor only - electronics removed) weight 0.61 lb. (0.28 kg) with NW25 KF flange housing (electronics) aluminum extrusion indoor only mounting orientation analog output log-linear 0.5 to 7 Vdc, 0.5 V/decade InstruTech Page 3... -
Page 7: Dimensions
(SELV) and limited power source (LPS), Class 2. The connection to the gauge has to be fused. Dimensions in. (mm) Fitting dimension A NW25KF 0.59 in. (15 mm) NW40KF 0.67 in. (17 mm) 2 3/4 in. Conflat® 0.91 in. (23 mm InstruTech Page 4... -
Page 8: Part Numbers
24 Vdc @ 750 mA (18 W) Connector: 9-pin D-sub female to mate with and power the WGM701 module Cable length: 6 ft. (2 m) Note: 9-pin D-sub connector backshell can be opened to enable connections to signals and relays InstruTech Page 5... -
Page 9: Important Safety Information
WGM701 Wasp 2 Important Safety Information InstruTech has designed and tested this product to provide safe and reliable service, provided it is installed and operated within the strict safety guidelines provided in this manual. Please read and follow all warnings and instructions. -
Page 10: Safety Precautions - Service And Operation
Do not use if the unit has been dropped or the enclosure has been damaged. Contact InstruTech for return authorization and instructions for returning the product to InstruTech for evaluation. -
Page 11: Electrical Conditions
In cases where an equipment failure could cause a hazardous condition, always implement fail-safe system operation. For example, use a pressure relief device in an automatic backfill operation where a malfunction could result in high internal pressures if the pressure relief device was not installed on the chamber. InstruTech Page 8... -
Page 12: Gas Dependency
WARNING! The measurement value is gas dependent. The pressure reading applies to dry air, O , CO and . For other gases, the measurements have to be corrected. Refer to section 5 titled “Using the gauge with different gases” for more details. InstruTech Page 9... -
Page 13: Installation
Remove the protective lid and install the product to the vacuum system following manufacturer’s recommendations for different flanges and fittings. Keep the protective lid for future maintenance. Seal with centering ring Protective lid Seal with centering ring and filter Clamp InstruTech Page 10... -
Page 14: Electrical Installation
• Use an overall metal braided shielded cable. The connector must have a metal case. • Connect the supply common with protective ground directly at the power. • Use differential measurement input (signal common and supply common conducted separately). • Potential difference between supply common and housing ≤16 V (overvoltage protection). InstruTech Page 11... -
Page 15: Connector
* Does not apply to WGM701. Pin 1 is not assigned. Digital input to gauge is not required as high voltage for cold cathode sensor is turned on automatically once measurements from pirani has indicated low enough pressure level. InstruTech Page 12... -
Page 16: Setup And Operation
Connect power to the WGM701 using the designated pins 4 and 2 of the 9-pin D-sub connector. Alternatively, you can power the device by connecting InstruTech’s PS501-A power supply to the connector. The gauge consists of two separate measuring systems (Pirani and cold cathode system based on the inverted magnetron principle). -
Page 17: Status Indication
Torr and 7.5 x 10 Torr. • The characteristic curve of the Pirani can be affected if used under different climatic conditions, through extreme temperatures, aging or contamination. If necessary the user can manually readjust the Pirani gauge as described below: InstruTech Page 14... -
Page 18: Pirani Atm Adjustment
Press the <ADJ> button with a pin and the HV adjustment is carried out (duration 5 s). If the output from the gauge corresponds to 7.6 × 10 Torr, the adjustment has been successful. Otherwise, repeat the adjustment procedure. InstruTech Page 15... -
Page 19: Using The Gauge With Different Gases
(Pirani Mode only - Gauge calibrated for air) p [Torr] Indication range above 10 Torr Freon 12 –1 Water vapor –2 –3 –2 –1 4 6 8 4 6 8 4 6 8 4 6 8 [Torr] InstruTech Page 16... - Page 20 = 6 X 10 Torr true pressure of argon gas eff = A mixture of gases and vapors is often involved. In this case, accurate determination is only possible with a partial pressure measurement instrument, e.g. a quadrupole mass spectrometer. InstruTech Page 17...
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Page 21: Analog Output
X-axis with a log scale; the output signal is plotted on the Y-axis on a linear scale. Log-Linear Analog Voltage to Pressure 1.0E-10 1.0E-09 1.0E-08 1.0E-07 1.0E-06 1.0E-05 1.0E-04 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 Pressure (Torr) InstruTech Page 18... -
Page 22: Service
• Replace the measuring chamber (spare sensor) InstruTech assumes no liability and the warranty becomes null and void if any repair work other than replacing the sensor activation (ignition) aid, measuring or ionization chambers is carried out by the end-user or third parties. -
Page 23: Removing The Gauge From Service
Always use clean, lint free gloves as well as clean tools when working with this product. 1) Vent the vacuum system and turn off power to the gauge. 2) Unplug the cable and remove the gauge from the chamber. 3) Re-install the protective lid. Seal with centering ring Protective lid Clamp InstruTech Page 20... -
Page 24: Inspecting The Sensor
Possible cause between pins 5 + measuring Contamination, ∞ <<∞ chamber short circuit cold cathode sensor Measuring chamber Replace measuring chamber if defective. It is recommend to perform a leak test (leak rate <1×10 mbar l/s). InstruTech Page 21... -
Page 25: Replacing The Ionization Chamber And Sensor Activation Aid
CAUTION! concentrically. Do not bend the anode. • Insert the new ignition aid into the mounting tool with the jagged side downwards … … and slide it onto the anode until the stop position is reached. InstruTech Page 22... - Page 26 Carefully slide the measuring chamber (3) (clean or new) into the electronics unit (5) until the mechanical stop is reached. Pins aligned straight. Fasten the measuring chamber (3) by means of the hexagon socket set screw (4). InstruTech Page 23...
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Page 27: Replacing The Measuring Chamber
WARNING! Helium may cause electric arcing with detrimental effects on the electronics of the product. Before performing any leak tests disconnect power and remove the electronics unit. InstruTech Page 24... -
Page 28: Troubleshooting
EEPROM error. Switch the gauge off and on again after 5 s Replace the gauge Signal continually at approx. lid solid lid solid Measuring chamber Replace the measuring chamber 3.8 x 10 Torr green green severely contaminated InstruTech Page 25... -
Page 29: Factory Service And Support
(examination of which shall disclose to SELLER's satisfaction that it is defective) returned, to SELLER's plant, properly identified within twenty four (24) months (unless otherwise noted) after the date of shipment from InstruTech Plant. BUYER must obtain the approval of SELLER and a return authorization number prior to shipment. - Page 30 InstruTech® 1475 S. Fordham St. Longmont, CO 80503 Phone +1-303-651-0551 Fax +1-303-678-1754 E-mail info@instrutechinc.com www.instrutechinc.com p/n 002618-100...