Summary of Contents for SIGNAL INSTRUMENT Signal
- Page 1 250SM COOLER DRYER OPERATING MANUAL The SIGNAL INSTRUMENT Co. Ltd. 12 Doman Road, Camberley Surrey, GU15 3DF England Tel: +44 (0) 1276 682841 Fax: +44 (0) 1276 691302 Part Number 250/335050...
- Page 2 250SM OPERATING MANUAL DOCUMENT HISTORY ISSUE AMENDMENT DATE 1.00 First Issue December 9,1996 1.01 Addition of Warranty Statement January 6, 1999 Page 2 of 26 250/335050 Issue 1.01...
- Page 3 While we believe that the information and guidance given in this manual is correct, all parties must rely upon their own skill and judgement when making use of it. The Signal Instrument Co. Ltd. will not assume any liability to anyone for any loss or damage caused by any error or omission in the manual, whether such error or omission is the result of negligence or any other cause.
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Page 4: Table Of Contents
5.1 Introduction..............................18 5.2 Description ..............................18 5.3 Alarm Conditions ............................19 5.4 Using The Alarm Relay ..........................19 5.5 Controlling Signal Analysers ........................20 5.6 Remote Temperature Monitoring........................ 20 6. TROUBLE SHOOTING ....................21 6.1 Intermittent Water Alarm..........................21 6.2 Output Dew Point Deviations ........................ - Page 5 Figure 8 Front Panel Controls and Indicators ......................18 Figure 9 Upstream Pump Control ........................19 Figure 10 Downstream Solenoid Control......................19 Figure 11 Controlling a Signal Analyser......................19 Figure 12 Sample Dew Point Estimation ......................21 Figure 13 Peristaltic Tube Connections .......................23 Figure 14 Flow Diagram ............................24 250/335050 Issue 1.01...
- Page 6 250SM OPERATING MANUAL Page 6 of 26 250/335050 Issue 1.01...
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Page 7: Introduction
250SM OPERATING MANUAL INTRODUCTION INTRODUCTION Cooler 1.1.1 The 250SM cooler is based on the solid state Peltier element and include a continuous peristaltic drain pump. It is intended for OEM applications in the emissions monitoring market. 1.1.2 A conditioned sample with a dew point of 5 °C can be obtained from a hot sample gas of up to 210 °C and having a dew point of up to 70 °C. -
Page 8: Specification
SPECIFICATION 250SM OPERATING MANUAL SPECIFICATION Sample Heat Removal 2.1.1 Maximum 18 W at 25 °C ambient. 2.1.2 Figure 1 shows the maximum cooling capability over the ambient temperature range. Channel Capability Ambient Temperature °C Figure 1 Channel Performance Sample Input 2.2.1 Maximum inlet temperature 210 °C. -
Page 9: Power
250SM OPERATING MANUAL SPECIFICATION Power Dual voltage 115 Vac ±15% or 230 Vac ±15% selectable from the rear panel. 2.7.1 2.7.2 Mains fuse sizes are all 5 x 20 mm. HBC Supply 115 Vac 230 Vac Fuse 4 AT 2 AT Table 1 Fuse and VA Rating Analogue Output 2.8.1... - Page 10 SPECIFICATION 250SM OPERATING MANUAL Page 10 of 26 250/335050 Issue 1.01...
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Page 11: Installation
250SM OPERATING MANUAL INSTALLATION INSTALLATION CAUTION THE COOLER MUST NOT BE USED WITHOUT A SAFETY EARTH CONNECTION. After connection to a source of hot sample, the inlet port may become hot. TAKE PRECAUTIONS AGAINST BURNS. Introduction 3.1.1 Installation requires the use of a tool set compatible with electrical and pneumatic skills. A suitable set of tools for a minimum installation consists of and electricians flat bladed screwdriver for the mains connections, a sharp knife for cutting PTFE tubing, a "... -
Page 12: Basics
INSTALLATION 250SM OPERATING MANUAL Basics 3.3.1 Cooler performance is a compromise between installation environment and sample condition. 3.3.2 The ambient temperature surrounding the cooler sets an upper limit to the amount of heat that can be extracted from the sample. 3.3.3 The amount of heat to be removed is a function of the sample dew point and temperature, and the rate of heat removal is directly proportional to flow rate. -
Page 13: Location
250SM OPERATING MANUAL INSTALLATION Channel Capability Ambient Temperature °C Figure 5 Channel Performance Location 3.4.1 Observe the environmental limitations listed in the specification section. 3.4.2 The cooler is designed to be mounted at the rear of a rack system to keep the rack panel space clear. -
Page 14: Figure 6 Connection Panel Layout
INSTALLATION 250SM OPERATING MANUAL Figure 6 Connection Panel Layout 3.5.2.2.1 The cooler must be used with a safety earth. If your mains supply has no earth terminal, a separate earth must be connected to the M6 stud on the rear panel. This stud can be used to provide a common ground or screen when data logging. -
Page 15: Gas Connections
250SM OPERATING MANUAL INSTALLATION 3.5.2.3 No Local Earth 3.5.2.3.1 If the local mains supply does not provide an earth connection, you must supply an independent one. Consult a qualified electrician. 3.5.2.3.2 A mains distribution panel should be installed to provide earthed power outlets for the cooler and all associated equipments. - Page 16 INSTALLATION 250SM OPERATING MANUAL measurement or control equipment. A screened junction box will be necessary if the cable is to be split to serve multiple outlets. 3.9.2 Figure 7 shows the connector pin identification. Page 16 of 26 250/335050 Issue 1.01...
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Page 17: Basic Operation
200SM SERIES OPERATING MANUAL BASIC OPERATION BASIC OPERATION Introduction 4.1.1 The following instructions guide you through the steps necessary to achieve sample cooling. 4.1.2 The cooler has no controls other than the mains on-off switch making it a very simple device to use. -
Page 18: Operation
OPERATION 250SM OPERATING MANUAL OPERATION Introduction 5.1.1 This section gives a detailed explanation on the use and operation of the cooler. Description 5.2.1 The cooler is contained in a 5U case suitable for bench or rack mounting. All pneumatic and electrical connections are on one panel. Another panel contains channel indicators and the mains power switch. -
Page 19: Alarm Conditions
The relay contacts can be use to sound a warning alarm and to automatically switch the sample pump off, or to set Signal Series III analysers to their standby states. Take care not to exceed the relay contact ratings. An auxiliary relay will be required if you are driving mains loads or other high voltage, high current devices. -
Page 20: Controlling Signal Analysers
OPERATION 250SM OPERATING MANUAL Controlling Signal Analysers 5.5.1 All Series III analysers have a remote ‘SLEEP’ control activated by a contact closure. This places the analyser into standby mode after purging the measurement path with zero gas. It is important that the plumbing includes sufficient damping to prevent significant pressure pulses. -
Page 21: Trouble Shooting
200SM SERIES OPERATING MANUAL TROUBLE SHOOTING TROUBLE SHOOTING Intermittent Water Alarm 6.1.1 This could be due to too high a sample flow rate or to flow pressure pulsations. Turn off the sample flow. The light should be either on or off. In either case, drain the catch pot as detailed in section 8.1. -
Page 22: Technical Description
TECHNICAL DESCRIPTION 200SM SERIES OPERATING MANUAL TECHNICAL DESCRIPTION Description 7.1.1 The cooler consists of a fan assisted solid state, peltier element cooling with associated electronics A pre-cooling coil in the forced air cooling path preconditions the sample. The pre-cooled sample is fed to a sample chamber where a labyrinth surrounds a cold block held at the control temperature. -
Page 23: Routine Maintenance
250SM OPERATING MANUAL ROUTINE MAINTENANCE ROUTINE MAINTENANCE Figure 13 Peristaltic Tube Connections Catch Pot Water Removal 8.1.1 Once per month, or more frequently if necessary, check for any collected water in the catch pot. 8.1.2 Disconnect the inlet pipe to allow water to drain. 8.1.3 Place a receptacle under the drain port and remove the drain cap. -
Page 24: Peristaltic Pump Tube Replacement
ROUTINE MAINTENANCE 250SM OPERATING MANUAL Peristaltic Pump Tube Replacement 8.2.1 The peristaltic pump uses a flexible tube as the pumping mechanism. This tube will suffer from fatigue over a period of time and will fracture. This will cause sample leakage and a build up of water within the cooler chamber. If this water builds up so that it is transferred to the safety catch pot, the alarm relay will operate. -
Page 25: Routine Servicing
9.1.2 If you wish to carry out your own servicing, contact Signal, your local distributor or agent. Servicing 9.2.1... -
Page 26: Warranty
For a period of 24 months from the date on which an instrument is delivered to the Purchaser, Signal Group Ltd. (the ‘Company’) will exchange or repair at the Company’s option any part or parts requiring replacement or repair by reason of defective workmanship or material. This warranty applies to all new instrumentation manufactured by and purchased from Signal Group Ltd.
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