Precision Miniature Load Cells Model 31 and 34 WELDED STAINLESS RUGGED, SMALL SIZE TENSION/COMPRESSION Model 31 Model 34 (Tension/Compression) (Tension/Compression) Sensotec Sensors Models 31 and 34, Precision Miniature load cells measure both tension and compression load forces of 50 grams to 10,000 lb. These models are our highest accuracy, rugged miniature load cells. Model 31's welded, stainless steel construction is designed to eliminate or reduce to a minimum, the effects of off-axis loads. (The internal construction assures excellent long term stability for ranges 1000 grams and above.) A modification permits this model to be completely welded for underwater applications. The Model 31 tension/compression load cell has male threads while the Model 34 tension/compression load cell has female threaded load attachments. High accuracies of 0.15-0.25% full scale are achieved. Each bonded strain gage unit is built of welded 17-4 PH stainless steel for additional ruggedness. All load cells that have ranges 10 lb. have a small electrical zero balance circuit board which is in the lead wire (approximately 1"x .087" thick). This balance board does not have to be the same temperature as the transducer. Applications include cable tension and electromechanical parts testing. Dimensions (inches) Model 31 (Order Code AL311) Available Ranges* 50; 150; 250 500; g. 1,000 g.; 5; 10 lb. 25; 50; 100 lb. 250; 500; 1,000 lb. 2,000; 3,000 lb. 4,000; 5,000 lb. 7,500; 10,000 lb. T D" H" C" 1.00 0.75 1.00 1.00 1.00 1.25 1.38 0.75 0.45 0.52 0.52 0.72 0.94 1.10 0.25 0.25 0.25 0.38 0.50 0.63 0.88 Thread #6-32 UNC #6-32 UNC #10-32 UNF 1 /4-28 UNF 3 /8-24 UNF 1 /2-20 UNF 3 /4-16 UNF F" A" 0.11 0.05 0.03 0.03 0.03 0.03 0.03 0.50 0.31 0.50 0.50 0.50 0.50 0.50 B" 0.38 0.19 0.25 0.25 0.38 0.38 0.38 * Stocked ranges are in bold face print. Notes: Model 31 load cells <250 grams have overload stops. For custom cells without overload stops consult SENSOTEC. Model 31 Male Threads Model 34 Female Threads (Tension/Compression) (Tension/Compression) Model 34 (Order Code AL312) Available Ranges 50; 150; 250; 500 g. 1,000 g.; 5; 10 lb. 25; 50; 100 lb. 250; 500; 1,000 lb. LO-18 D" 1.00 0.75 1.00 1.00 H" 1.75 1.75 1.75 2.00 A" 0.52 0.60 0.52 0.75 B" 0.52 0.72 0.72 0.75 M" 0.38 0.19 0.25 0.25 N" 0.50 0.31 0.50 0.50 1-888-282-9891 Options (See Appendix) Temperature compensated 1b, 1c, 1f; Special calibration 30a, 30b Premium Options: 1d, 1e, 1g, 1h ( </=25 lb), 1i; 6d; 9a (</=5 lb.) Accessories: Rod end attachments for Model 31 Model 31 (Male Threads) (Tension/Compression) Order Code AL311 PERFORMANCE ENVIRONMENTAL ELECTRICAL Load Ranges ................................ Non-Linearity/Hysteresis (max) 50 to 1,000 g ............................ 5 to 250 lb. ............................... 500 to 10,000 lb. ...................... Non-Repeatability (max) 50 to 1,000 g ............................ 5 to 10,000 lb. .......................... Output (standard) 50 to 150 g (semi) .................... 250 to 500 g (semi) .................. 1,000 g ..................................... 5 lb. to 10,000 lb. (foil) ............. Resolution .................................... Temperature, Operating ............... Temperature, Compensated ........ Temperature Effect - Zero/Span (max) 50 to 500 g ............................... 1,000 g ..................................... 5 to 10,000 lb. .......................... Strain Gage Type ......................... Excitation (Calibration) 50 g to 10 lb. ............................ 20 lb. to 10,000 lb. ................... Insulation Resistance ................... Bridge Resistance 50 to 500 g ............................... 1,000 gms................................. 5 to 10,000 lb. .......................... Shunt Calibration Data ................. Wiring Code (std) ......................... Electrical Termination (std) .......... Model 34 (Female Threads) (Tension/Compression) Order Code AL312 50 g to 10,000 lb. 50 g to 1,000 lb. 0.15% F.S. 0.15% F.S. 0.2% F.S. 0.15% F.S. 0.15% F.S. 0.2% F.S. 0.1% F.S. 0.05% F.S. 0.1% F.S. 0.05% F.S. 0.1mV/V/g max 20mV/V 1.5mV/V (nominal) 2mV/V Infinite 0.1mV/V/g 20mV/V 1.5mV/V (nom) 2mV/V Infinite - 65 F to 250 F 60 F to 160 F - 65 F to 250 F 60 F to 160 F 0.015% F.S./ F 0.005% F.S./ F 0.005% F.S./ F 0.015% F.S./ F 0.005% F.S./ F 0.005% F.S./ F Foil or Semiconductor Foil or Semiconductor 5.00VDC 10.0VDC 5000 megohm @ 50VDC 5.00VDC 10.0VDC 5000 megohm @ 50VDC 500 ohms (semi) 350 ohms (foil) 350 ohms (foil) Included #1 (See Pg. AP-8) Teflon cable (5 ft.) 500 ohms (semi) 350 ohms (foil) 350 ohms (foil) Included #1 (See Pg. AP-8) Teflon cable (5 ft.) MECHANICAL Overload, Safe ............................. Thread Size .................................. Deflection - Full Scale ................. Casing material ............................ Weight (nom)................................ 50% over capacity See table 0.0005"-0.0020" 17-4 PH Stainless 1.6 oz. 50% over capacity See table 0.0005"-0.0020" 17-4 PH Stainless 2.5 oz. IN-LINE AMPLIFIERS Outputs Available ......................... 5VDC, 4-20mA 5VDC, 4-20mA (Optional) NOTES *Standard calibration for tension/compression load cells is in tension only. General Information How to order (See Pg. AP-19) Load cell selection flow chart (See Pg. LO-1) Installation Note: Maximum torque for installation of Model 31 in ranges less than 25 lb. is 12 lb.-in. LO-19