Thermo Orion Intrinsically Safe Basic Waterproof pH Meter with Electrode -2.00 to 16.00 pH. This Orion intrinsically safe meter is designed for use where non-sparking equipment is desired. This meter carrys US intrinsically safe approval rating by Factory Mutual. The Orion 261S was designed for accurate measurement of pH, mV, and temperature in the field and is rated as intrinsically safe for measurement in hazardous and confined space environments and anywhere non sparking equipment is desired. A large easy to read display monitors electrode response condition and calibration status as well as pH, mV and temperature readings. Package includes Triode 3 in 1 combination pH electrode, built in quiver, neckstrap and instruction manual. pH range: -2.00 to 16.0. pH resolution: 0.1, 0.01. pH accuracy: /-0.01. Auto buffer recognition: Dependent on buffer set (7 pre programmed sets). Calibration points: 3. ORP range: /-1300.0 mV. ORP resolution: 0.1 mV. ORP accuracy: /-0.1% of value 0.3 mV. Temperature range: -20 to 120°C. Temperature resolution: 0.1°C. Temperature relative accuracy: /-0.3°C. Display: Custom LCD. Inputs: Waterproof DIN, 4mm banana. Power requirements: 3 x alkaline AA batteries. Agency approvals: CE, FM, Ex (Intrinsically Safe). Environmental requirements: -10 to 55°C. Orion #: 0261S0.

• Package Dimensions ‏ : ‎ 14.2 x 13.2 x 11.1 inches; 3.85 Pounds
• Date First Available ‏ : ‎ March 11, 2011
• Manufacturer ‏ : ‎ Thermo Scientific
• Country of Origin ‏ : ‎ USA