The PD660 and PD661 are 3½ digit loop-powered meters, perfect for applications where a simple, low cost display is required and no AC power is available. Th unique backlighting option, powered completely from the loop, gives the units excellent readability, even in the poorest of lighting conditions. Both of these meters have an operating temperature range of –40°C to 85°C, and a voltage drop of 1.5VDC at 20mA and 3.5VDC at 20mA with the backlighting option. The PD660 NEMA 4X enclosure is a high impact-resistant ABS plastic body with a clear ABS plastic cover. The PD661explosion-proof enclosure is FM and CSA approved; NEMA 4, 7 & 9; Class I, Groups B, C & D and Class II, Groups E, F & G.
Precision Digital, 19 Strathmore Rd., Natick, MA 01760-2418. Tel: 508-655-7300. Fax: 508-655-8990.