Summary of Contents for Chemglass Life Sciences CHEMcell
- Page 1 Chemglass Life Sciences Gas Mixing Module - User Manual Page 1 GAS MIXING MODULE_APRIL 2019.docx...
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Page 2: Table Of Contents
Table of Contents List of Figures........................ 3 Overview ........................4 Common Terms ........................4 Power Button ..........................5 Connections ..........................5 Tubing .............................6 Touchscreen Display ....................7 Main Page ..........................7 Modes of Operation ......................8 About...........................8 Summary Page ........................9 Ratio Control Pages ......................11 How to Change Parameters ....................11 Totalizer Pages ........................13 Control Functionality .................... -
Page 3: List Of Figures
List of Figures 1 – P ) ................5 IGURE OWER UTTON ON IXING ODULE FRONT 2: C ) ................5 IGURE ONNECTIONS TO THE IXING ODULE BACK 3 –T ) ......................6 IGURE UBING ONNECTION FRONT 4 – T .......................... -
Page 4: Overview
Overview The Chemglass Life Sciences Gas Mixing Module is used to deliver a mixture of Air and at a controlled ratio. The Mixing Module houses built-in precision gas flow controllers that are operated through a touchscreen display. In addition to the flows, the pressure of the gas mixture is controlled within a safe limit. -
Page 5: Power Button
Power Button The power button on the front of the module glows blue when on. Figure 1 – Power Button on Gas Mixing Module (front) Connections The following are the connections to the Gas Mixing Module: • CO gas inlet push-on connection accepts ¼” OD flexible tubing. Gas should be filtered through a 0.2 micron filter. -
Page 6: Tubing
Tubing The gas mixer is configured for 1/4" tubing with quick-connects. Gas feed tubing is connected to the rear of the device and the output tubing to the front of the mixer by simply pushing the tubing into the quick connect fittings. SMC 1/4"... -
Page 7: Touchscreen Display
Touchscreen Display All user interface with the Gas Mixing Module is accomplished through the touchscreen display mounted on the front. Screen will go blank after 60 minutes of inactivity. Touching anywhere on the screen makes it come back on. If an alarm is activated, the display will flash and a buzzer will sound. Touching the display once will stop the flashing and sound but the alarm will remain active. -
Page 8: Modes Of Operation
Admin Page: For administration and maintenance use only. Not used during normal operation (see appendix). Each of the above is described in more detail in the following sections. Modes of Operation Two modes of operation are available: 1. RUNNING – Gas Mixing Module will operate automatically to maintain the set operating parameters. -
Page 9: Summary Page
Summary Page The Summary page provides an overview of the current Gas Mixing Module Operation. Set points (SP), flows, temperatures (T Deg C), and pressure are displayed. The values are continuously updated while the Gas Mixing Module is running. Mode of operation, Run/Stop, is also displayed on the upper left corner of the Summary page. -
Page 10: Figure 10- Summary Page - L
If the low flow alarms are enabled and active, the white text LF in red background will appear on the page. Figure 10– Summary Page – Low Flow Alarm If the 2-point calibration for CO2 flow is active, the text 2Pt in white with green background is shown on the upper right corner of the Summary page. -
Page 11: Ratio Control Pages
Ratio Control Pages Ratio Control Page 1 provides access to the user adjustable parameters for the operation of the Gas Mixing Module. Ratio Control Page 2 contains calculated values for reference. Figure 12 – Ratio Control Page 1 Figure 13 – Ratio Control Page 2, with and without 2Pt Calibration How to Change Parameters 1. -
Page 12: Figure 14 - Numerical Entry
NOTE: The CLR (clear) button will clear out the value shown at the top of the key pad screen or clear out the value that has been just entered. The CAN (cancel) button will close the key pad screen without making any changes. Figure 14 –... -
Page 13: Totalizer Pages
Totalizer Pages Total flows of CO and Air are calculated and displayed in Standard Cubic Centimeters (SCC) and Standard Liters (SL). The totalizers can be reset to zero by touching the RESET buttons. Totalizers automatically reset to zero when the total reaches 999,999,999. -
Page 14: Control Functionality
Control Functionality Ratio Control In normal operation, the target CO percentage is used to calculate the setpoints for the flow controller and air flow controller based on the target total gas flow rate. flow setpoint (SCCM) = (% CO / 100) * Target total flow Air flow setpoint (SCCM) = Target total Flow –... -
Page 15: Pressure Control
Pressure Control Maximum Pressure Shutdown If the outlet pressure exceeds a maximum of 1.5 PSIG, the mixing module will shut down both gas flows to protect the devices downstream of the mixing module. The text “Maximum Pressure Alarm” will be displayed on the touchscreen display. After resolving the high pressure problem, operation mode of the mixing module will have to be changed manually from Stopped to Running before automatic control can resume. - Page 16 After second 10-sec period, pressure above 0.05, but flow rates are below original set points: Calculated CO flow setpoint= 44 * 1.10 = 48.4 SCCM Calculated Air flow setpoint= 836 * 1.10 = 919.6 SCCM After third 10-sec period, pressure between 0.05 and 0.5: Calculated (limited) CO flow setpoint= 48.4 * 1.10 ...
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Page 17: Appendix I - Admin Page
Appendix I - Admin Page The Admin page is only used during the initial setup or periodic maintenance of the Gas Mixing Module. Modifying the settings on this page can damage, disrupt the function, or affect the accuracy of the Gas Mixing Module and should only be attempted by qualified personnel. -
Page 18: Control Modes (Ctrlmode)
Control Modes (CtrlMode) Figure 18 – Admin Control Modes This displays allows activation/deactivation of the modes of control. When activated, the corresponding box next to the mode appears in green. When deactivated, the boxes appear in gray. In normal operation, all boxes should be in green. On the main Admin Page, each of the control modes appear as a single letter. -
Page 19: Pressure Settings
Pressure Settings Pressure settings are available through the following page. Figure 20 – Pressure Settings Menu Pressure Control Settings (PressCtrlSettings) The Gas Mixing Module pressure is controlled between low and high pressure limits displayed on the Summary page. The limits can be adjusted from this display: Figure 21 –... -
Page 20: High Pressure Alarm (High Press Alrm)
The following table summarizes the allowable ranges for these parameters: Parameter Allowable Range Units Default Value Max Pressure Alarm 0.01 – 5.0 PSIG High Control Pressure 0.01 – 5.0, and lower PSIG than Max Pressure Alarm Low Control Pressure 0.01 – 5.0, and lower PSIG 0.05 than High Control... -
Page 21: Raw Pressure Data (Raw Press Data)
Raw Pressure Data (Raw Press Data) This display is used for troubleshooting the pressure transmitter operation. There are no adjustable parameters. The raw analog input signal should range from 0-1000. Figure 24 – Raw Pressure Data Default Values: This page can be reached from the Admin main page and allows the return to the default settings for the Mixing Module. -
Page 22: Low Flow Alarm Settings
Low Flow Alarm Settings It is possible to add low flow alarms for both air and CO flow measurements. If the flow drops below the minimum for a set time, a beeping sound will be activated and the display on the Gas Mixer will flash until touched. Touching the anywhere on the screen acknowledgements the alarm. -
Page 23: Calibrations
Calibrations Access to the calibration pages is available by logging in. User password is 9876. Figure 28 – Calibration Login After successful login, the following page appears with targets for the available calibration pages. Each of these pages is discussed in the following sections. Figure 29 –... -
Page 24: Tare Pressure
Tare Pressure The pressure transmitter is calibrated prior to installation. If it is necessary to tare (or zero) the pressure measurement, follow the steps below: 1. Remove the outlet tube in the front before taring of pressure to achieve atmospheric pressure, i.e., zero gauge pressure. 2. -
Page 25: Tare Alicat Flow Controllers
Tare Alicat Flow Controllers Taring the Alicat gas flow controllers makes sure these instruments are zeroed out. This process is usually performed at the factory, but can be repeated if necessary. This procedure should only be attempted when there is no gas flow to the flow controllers and the setpoints are set to zero. -
Page 26: Calibrate Co
Calibrate CO The Alicat flow controllers are calibrated for the particular gas at the factory. If it is necessary to re-calibrate the CO flow controller, follow the procedure below: 1. Measure the actual CO flow with secondary instrument. 2. On the Calib CO page 1, touch the button with black text “DoNotUse2PtCalib”... -
Page 27: Page 2 - All Values Zero
If all the entered values for the calibration are zero, a division by zero error can occur and the calibration will not be successful. In that case, the white text “Div 0” on red background will appear on page 2 and also 2 Pt Calibration will be disabled. Go back to page 1 and change at least one set of values to nonzero. -
Page 28: Factorymaintenance
FactoryMaintenance The FactoryMaintenance display is reserved for the factory settings and is password protected. Please contact Chemglass Life Sciences for further information. Page 28 GAS MIXING MODULE_APRIL 2019.docx... -
Page 29: Appendix Ii - Quick Setup Guide
Appendix II – Quick Setup Guide Before connecting tubing: 1. Carefully unwrap the Gas Mixer and connect the power. Make sure there are no obstructions in the gas inlets on the rear of the device. 2. Before connecting the gas feed tubing, turn the power on. 3.
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