Subscribe to Our Youtube Channel
Related Manuals for Thermo Electron Cahn C-34
Summary of Contents for Thermo Electron Cahn C-34
- Page 1 sales@artisantg.com artisantg.com (217) 352-9330 | Click HERE Find the Thermo / Cahn C-35 at our website:...
- Page 2 Cahn C-34, C-35 Cahn C-34 Microbalance, Cahn C-35 Ultra-Microbalance I N S T R U C T I O N M A N U A L 0.1µg 25mg 1.0µg 250mg 10µg 1250mg milligrams Range Calibrate Tare Ready microbalance Cahn C-35...
- Page 3 ORION ORP Standard is protected by US Patent 6,350,367. ORION Series A conductivity meters are protected by US Patent 5,872,454. © Copyright 2003, Thermo Electron Corporation. All rights reserved. Question everything, and Analyze. Detect. Measure. Control are trademarks of Thermo Electron Corporation.
-
Page 4: Table Of Contents
Table of Contents Section 1 Principles of Operation ..............1 Section 2 Installation ..................2 LOCATING THE BALANCE ....................2 SET UP ..........................2 VOLTAGE SOURCE ......................3 FREEING HANGDOWN LOOPS ..................4 Section 3 Controls .................... 5 RANGE ..........................5 RANGE LIGHTS ........................ - Page 5 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
-
Page 6: Section 1 Principles Of Operation
Section 1 Principles of Operation The Cahn C-34/C-35 is a very sensitive weight and force measurement instrument. It is designed for weights and forces up to 3.5 grams and is sensitive to changes as small as 0.1 micrograms. The balance may be described as a force-to-current converter. It consists of (1) a balance beam mounted to, supported by, and pivoting about the center of taut ribbon;... -
Page 7: Section 2 Installation
Section 2 Installation LOCATING THE BALANCE The Cahn C-34 or C-35 may be used in almost any location. It does not require leveling. How- ever, the level should not change after zeroing. Try to avoid exceptionally shaky tables, direct sunlight or drafty locations (such as near air conditioners). For ultimate microweighing, avoid locations near equipment which generate vibrations such as vacuum pumps, air conditioners or heavy machinery. -
Page 8: Voltage Source
VOLTAGE SOURCE The Power Cord is fitted with an U.S.-type plug. If the plug does not fit your electrical outlet, the plug may be cut off and your own plug installed. The color code for the Power Cord is: Black = line or hot White = return or neutral Green = ground or earth RS232... -
Page 9: Freeing Hangdown Loops
FREEING HANGDOWN LOOPS Free the Hangdown Loops inside the weighing chamber by cutting the strings first with sharp scissors and then removing the strings. Do not attempt to remove the tape without first cutting the strings (See Figure 3). Figure 3: Freeing the Hangdowns Artisan Technology Group - Quality Instrumentation ... -
Page 10: Section 3 Controls
Section 3 Controls The following brief description of the Cahn C-34 and C-35 controls will help you to understand the operation of the balance and will make weighing easier and faster. Figure 5 illustrates the front panel of the control unit. -
Page 11: Calibrate
CALIBRATE This key will automatically calibrate the selected range when the appropriate calibrating weight is placed on the pan. The 200 mg weight is used to calibrate the A loop position and the 1000 mg weight is used to calibrate the B position. The Calibration control has a special “scrolling” feature that allows you to input the exact value of the calibration weight (see page 11). -
Page 12: Operation
Section 4 Operation This section will give details of the operation of the Cahn C-34/C-35 microbalance. It is advisable to read this section carefully at least once with the instrument, and then to make reference to it as necessary. Various weighing procedures will be described in detail. You should be familiar with the controls as described in Section 3 before proceeding further with this section. -
Page 13: Turning On Balance
- Two types of weights are supplied with the Cahn C-34/C-35: calibration and tare weights. It is important to keep the two types separated. For more information about weights and the various classes, refer to the Weights section on page 23. -
Page 14: Sample Positions
SAMPLE POSITIONS There are three fine metal loops attached to the balance beam (see Figure 6). Samples and counterweights are suspended from these by means of stirrups and pans. The sample suspensions are referred to as A, B and TARE loops. The A and TARE loops are equidistant from the pivot point of the beam. -
Page 15: Range Selection
Once the sensitivity has been chosen, a corresponding weight range is determined. The weight range is the range of the weight values that can be read on the Weight Display. The Cahn C-34/ C-35 has a very wide weight range for each available sensitivity and is usually sufficient for routine measurements. -
Page 16: Calibration
CALIBRATION A 200 mg Calibration Weight is supplied for the A range and a 1000 mg Calibration Weight is supplied for the B range. Calibration Procedure: Remove samples or containers from the stirrups. Press the TARE key to zero the balance. If you are using the 25 mg range on the Cahn C-35, first zero the balance on the 25 mg range and then move to the 250 mg range for calibration. -
Page 17: Electrical Taring
All ranges on both the Cahn C-34 and C-35 have full range taring. However, taring reduces the amount of weighting range available for sample weight. For example, if you tare a 50 mg container in the 200 mg range of the Cahn C-34, your sample must weigh less than 150 mg. For example:... -
Page 18: Substitution Weighing
25 mg weighing range on the Cahn C-35, but can be used for weighing on any “A” Loop range on either the Cahn C-34 or C-35. The Air Baffles are cylinders installed at the bottom of the Weighing Chamber such that they protect the pans from the air currents that may be present in the chamber. -
Page 19: Maintenance And Troubleshooting
Section 5 Maintenance and Troubleshooting DAILY CARE No special daily maintenance is required for the C-34/C-35 balance. It is recommended that the balance remain in the power ON condition unless the balance will not be used for several weeks or longer. Immediately clean all spilled material. -
Page 20: Factory Repairs
FACTORY REPAIRS Should it become necessary to return the instrument to the factory for repairs, follow the instructions below for repacking. Remove all items including power cord, stirrups, pans, loose weights, etc. Do not return these items to us. We need only the balance to effect repairs. NOTE: Please see service and repair if balance needs to be returned to the factory for repair. -
Page 21: Service And Repair
978.232.6000 or fax 978.232.6031. In Europe, the Middle East and Africa, contact your local authorized dealer. Before returning any balance to the factory please obtain a return authorization from Thermo Electron Corporation. To speed up assistance it is recommended that you call from a phone which is close to the balance (and computer if applicable) in case we ask you to try a couple of tests on the equipment. -
Page 22: Section 6 Rs232 Interface
Section 6 RS232 INTERFACE The Cahn C-34/C-35 has an EIA standard RS232C compatible I/O port which may be used to connect the balance to a personnel computer or other computing device with a similar interface port. RS232 CIRCUITS The balance will be connected in such a way that it appears to be a data terminal (DTE). The following RS232C circuits are utilized by the balance interface: Pin 2: Transmitted Data: will carry data transmitted by the balance (TXD). -
Page 23: Dip Switch Settings
DIP SWITCH SETTINGS A six (6) position dip switch (see Figure 8) has been installed on the processor card of the Cahn C-34/35 to control configuration of the serial I/O port. This switch allows the user to select the baud rate, word length, number of stop bits and operating mode of the balance. The red dip switch is in the lower right corner of the card. -
Page 24: Operating With A Computer
600 baud rate OPERATING WITH A COMPUTER The balance will respond to a number of commands received via the serial report via the computer. The following set of commands are those recognized by the Cahn C-34/35: Code Command ASCII Hex... -
Page 25: Interconnecting Cables
(pin 1 to pin 1, etc.) will not function properly. A Null Modem, or crossover cable (pin 2 to pin 3, pin 3 to pin 2) is required to interface a Cahn C-34/C-35 with a computer. This cable is available from any computer store. If you have an IBMAT type computer, you will need a cable with a DB9 connector on the computer end and a DB25 connector on the balance end. - Page 26 20 opens communication port #1, sets the baud rate to 600, selects no parity, 8 bit word length and 2 stop bits (see Dip Switch Settings, page 20). The port is then assigned to buffer #1. The PRINT command in line 80, 90 or 100 sends the range set command to the balance. The PRINT command in line 150 sends an enquire command to the balance asking for a weight reading.
-
Page 27: Section 7 Appendix
READABILITY is the least significant digit which can be resolved from the readout under normal conditions and set up. SENSITIVITY is the smallest mass difference that can be detected by the balance. PERFORMANCE SPECIFICATION FOR Cahn C-34/C-35 LOOP A LOOP B Capacity 1.5 grams... -
Page 28: Weights
A Class 1.1 (formerly Class M) 200 and 1000 mg Calibrating Weights are supplied with the Cahn C-34/C-35 balance. They are the most accurate weights available with a tolerance of 0.005 mg. For substitution weighing, as described on page 15, you should order additional weights that you feel may be needed. -
Page 29: Section 8 Warranty
Section 8 Warranty For the most current warranty information, visit www.thermo.com. The Thermo Electron Corporation, Orion products warranty covers failures due to manufacturer’s workmanship or material defects from the date of purchase by the user. User should return the warranty card and retain proof of purchase. Warranty is void if product has been abused, mis- used, or repairs attempted by unauthorized persons. - Page 30 Twelve months from date of purchase by the user (or eighteen months from date of ship- ment from Thermo) ® • Laboratory pH Meters, (Orion 301, 611 and 940), SensorLink , pHuture™ pH Meters (Orion ® ® ® 610 and 620), Sage Pumps, Cahn Balances, 930 Ionalyzer , 950 ROSS™...
- Page 31 For products in the catalog not listed in this warranty statement, please visit our website at: www.thermo.com THE WARRANTIES DESCRIBED ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES WHETHER STATUTORY, EXPRESS OR IMPLIED INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PAR- TICULAR PURPOSE AND ALL WARRANTIES ARISING FROM THE COURSE OF DEALING OR USAGE OF TRADE.
- Page 32 Environmental Instruments Water Analysis North America 166 Cummings Center Beverly, MA 01915 USA Tel: 978-232-6000 Dom. Fax: 978-232-6015 Int’l. Fax: 978-232-6031 Europe 12-16 Sedgeway Business Park Witchford, Cambridgeshire England, CB6 2HY Tel: 44-1353-666111 Fax: 44-1353-666001 Far East Room 904, Federal Building 369 Lockhart Road Wanchai, Hong Kong Tel: 852-2836-0981...
Need help?
Do you have a question about the Cahn C-34 and is the answer not in the manual?
Questions and answers