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PC33 & 52 User’s Manual

Michell Instruments

  

15

appendix C

C.4 

Calibration Facilities

Michell Instruments’ calibration facilities are among the most sophisticated in the world 

and have been recognized for their excellence. 

Traceability to the National Physical Laboratory (NPL) UK is achieved through our UKAS 

Accreditation (Number 0179). This covers dew point over the range -90 to +90°C (-130 

to +194°F) and also Relative Humidity. 

Dew-point  calibrations  are  also  traceable  to  the  National  Institute  for  Standards  & 

Technology (NIST) USA over the range -75 to +20°C (-103 to +68°F).

NOTE: Standard traceable calibration certificates for instruments and sensors 

are not issued under our UKAS accreditation. UKAS certificates are usually to 

special order and are clearly identified.

C.5 

Return Policy

If a Michell Instruments’ product malfunctions within the warranty period, the following 

procedure must be completed:

1. 

Notify  a  Michell  Instruments’  distributor,  giving  full  details  of  the  problem,  the 

model variant and the serial number of the product. 

2. 

If  the  nature  of  the  problem  indicates  the  need  for  factory  service  then  the 

instrument should be returned to Michell Instruments, carriage prepaid, preferably 

in  the  original  packaging,  with  a  full  description  of  the  fault  and  the  customer 

contact information. 

3. 

Upon receipt, Michell Instruments will evaluate the product to determine the cause 

of the malfunction. Then, one of the following courses of action will be taken:

• 

If the fault is covered under the terms of the warranty, the instrument will 

be repaired at no cost to the owner and returned.

• 

If Michell Instruments determines that the fault is not covered under the 

terms of the warranty, or if the warranty has expired, an estimate for the 

cost of the repairs, at standard rates, will be provided. Upon receipt of the 

owner’s approval to proceed, the product will be repaired and returned. 

C.6 

Warranty

Unless otherwise agreed, the Supplier warrants that as from the date of delivery for a 

period of 12 months the goods and all their component parts, where applicable, are free 

from any defects in design, workmanship, construction or materials.

The Supplier warrants that the services undertaken shall be performed using reasonable 

skill and care, and of a quality conforming to generally accepted industry standards and 

practices.

Except  as  expressly  stated  all  warranties  whether  express  or  implied,  by  operation 

of law or otherwise, are hereby excluded in relation to the goods and services to be 

provided by the Supplier.

All warranty services are provided on a return to base basis. Any transportation costs 

for the return of a warranty claim shall reside with the Customer.

Содержание PC33

Страница 1: ...PC33 52 RH Temperature Probes User s Manual M I C H E L L IN S T R U M E N T S E L I T R O N I C L I W 4 97238 Issue 2 October 2013...

Страница 2: ...nformation when contacting Michell Instruments for service purposes Instrument Code Serial Number Invoice Date Location of Instrument Tag No Instrument Code Serial Number Invoice Date Location of Inst...

Страница 3: ...property of Michell Instruments Ltd and may not be copied or otherwise reproduced communicated in any way to third parties nor stored in any Data Processing System without the express written authori...

Страница 4: ...ent 6 Figures Figure 1 PC33 52 1 Figure 2 Cable Connections 2 Figure 3 Adjustment Tube 3 Figure 4 PC33 2 wire Connection 4 Figure 5 PC33 3 4 wire Connection 5 Figure 6 PC52 2 wire Connection 6 Figure...

Страница 5: ...for the user to come into contact with any hazardous substance which might be employed in the construction of the instrument Care should however be exercised during maintenance and the disposal of ce...

Страница 6: ...m millimeters oz ounce s RH relative humidity T temperature V Volts Ohms inch es percentage Warnings The following general warning listed below is applicable to this instrument It is repeated in the t...

Страница 7: ...pplications Figure 1 PC33 52 1 1 Highlights Low cost PC33 with analog output is designed for HVAC applications PC52 with analog output is designed for accurate measurement in controlled environments A...

Страница 8: ...tor White Pin 1 Power Supply V Yellow Pin 2 Output temperature Brown Pin 3 Common ground Green Pin 4 Output RH 4 20 mA output 2 wire Cable Connector White Pin 1 Output RH Yellow Pin 2 Output temperatu...

Страница 9: ...nd high temperature conditions more frequent calibration is recommended If re adjustment is necessary refer to Sections 3 1 and 3 2 and also see the drawings of the circuit boards for the location of...

Страница 10: ...ached and the reading of the reference has stabilized adjust the transmitter with the RH potentiometer see 1 below For versions with a T output the temperature should be calibrated at ambient temperat...

Страница 11: ...TOR CABLE RH Temp REL HUMIDITY OUTPUT J5 J6 0 to 1 V DC 0 to 5 V DC 0 to 10 V DC Soldered joint TEMPERATURE RANGE OUTPUT 0 to 50 C 32 to 122 F 0 to 100 C 32 to 212 F 20 to 80 C 4 to 176 F Output J7 J8...

Страница 12: ...e transmitter with the Zero RH potentiometer see 1 below Compare with the reference After the second high value is reached and stabilized adjust with the Span RH potentiometer see 2 below For versions...

Страница 13: ...CABLE RH Temp REL HUMIDITY OUTPUT J1 J2 J3 0 to 1 V DC 0 to 5 V DC 0 to 10 V DC Soldered joint SETTINGS TEMPERATURE OUTPUT AND RANGE WITH SOLDER JUMPERS 0 to 50 C 32 to 122 F 0 to 100 C 32 to 212 F 2...

Страница 14: ...PC33 52 User s Manual 8 97238 Issue 2 October 2013 appendix a Appendix A Technical Specifications...

Страница 15: ...Electrical Specifications Output Signal Options 4 20 mA 0 to 1 0 to 5 0 to 10 V Supply Voltage 14 to 30 V DC for 0 to 5 0 to 10 V output 5 to 30 V DC 0 to 1 V mA output Operating Specifications Operat...

Страница 16: ...PC33 52 User s Manual 10 97238 Issue 2 October 2013 appendix B Appendix B EC Declaration...

Страница 17: ...directives listed below 2004 108 EC EMC Directive Using the standards EN61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements Group 1 Class B emissions and imm...

Страница 18: ...s listed below 2004 108 EC EMC Directive Using the standards EN61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements Group 1 Class B emissions and immunity and...

Страница 19: ...PC33 52 User s Manual Michell Instruments 13 appendix C Appendix C Quality Recycling Warranty Information...

Страница 20: ...tive and the Restriction of Hazardous Substances RoHS Directive place rules upon European manufacturers of electrical and electronic equipment The directives aim is to reduce the impact that electroni...

Страница 21: ...escription of the fault and the customer contact information 3 Upon receipt Michell Instruments will evaluate the product to determine the cause of the malfunction Then one of the following courses of...

Страница 22: ...PC33 52 User s Manual 16 97238 Issue 2 October 2013 appendix D Appendix D Recommended Practices in Humidity Measurement...

Страница 23: ...instrument for the job Allow hygrometers to equilibrate in any new environment This is particularly necessary after changes in temperature due to transportation or storage Depending on the instrument...

Страница 24: ...ature changes can increase the tendency of these materials to affect the humidity of the surrounding air Condensation in a sampling process can invalidate humidity measurements by reducing the water c...

Страница 25: ...ments Ambient humidity Avoid using hygrometers near the body which is a source of heat and moisture Do not breathe close to the measurement High humidity above the ambient range sample lines should be...

Страница 26: ...types of hygrometer Relative humidity capacitive sensor Care should be taken to avoid mechanical shock impact or thermal shock sudden temperature changes Sensors should be protected from steam or wate...

Страница 27: ...PC33 52 User s Manual Michell Instruments 21 NOTES...

Страница 28: ...http www michell com...

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