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induced surges and transients from field cabling
Protects 2, 3 and 4 wire transmitters • Easy and direct mounting — screws into spare conduit entry • Intrinsically safe and flameproof to CENELEC standards • Parallel connection avoids introduction of any resistance into loop • ATEX approved • 10 year product warranty
Maximum surge current 20kA peak current (8/20μs waveform) Leakage current Less than 10μA at max. working voltage Working voltage 35V dc maximum Bandwidth 1MHz Resistance No resistance introduced into loop Ambient temperature limits -40°C to +85°C (-40°F to +185°F) (working) -40°C to +85°C (-40°F to +185°F) (storage) Humidity 5% to 95% RH (non-condensing) Electrical connections TP48 3 flying leads (line1, line 2 & earth) TP48 3 Wire 4 flying leads (+ve, -ve, signal & earth) TP48 4 Wire 5 flying leads (+ve, -ve, signal +ve, signal -ve, earth) Wire size: 32/0.2 (1.0mm2, 18 AWG) Lead length: 250mm (minimum) Casing ANSI 316 stainless steel hexagonal bar stock, male thread Threads TP48-3-N & TP48-4-N - 1/2” NPT TP48-3-I & TP48-4-1 - 20mm ISO ) (M20 x 1.5) TP48-3-G & TP48-4-G - G 1/2” (BSP 1/2”) Weight 175g (6.2oz) Dimensions See figure 1 EMC compliance To Generic Immunity Standards EN50082, part 2 for industrial environments Electrical safety EEx ia IIC T4, Ceq=O, Leq=0; the unit can be connected without further certification into any intrinsically safe loop with open circuit voltage <60V and input power <1.2W. EEx d IIC T4; the unit is apparatus approved to flameproof (explosionproof) standards, and can be fitted into a similarly approved housing.
TP48-N Non-certified SPD - 1/2” NPT thread TP48-I Non-certified SPD - 20mm ISO thread TP48-G Non-certified SPD - G 1/2” (BSP 1/2 inch) TP48-3-N Non-certified SPD - 1/2” NPT thread TP48-3-I Non-certified SPD - 20mm ISO thread TP48-3-G Non-certified SPD - G 1/2” BSP 1/2 inch TP48-4-N Non-certified SPD - 1/2” NPT thread TP48-4-I Non-certified SPD - 20mm ISO thread TP48-4-G Non-certified SPD - G 1/2” BSP 1/2 inch TP48-N-NDI Certified SPD - 1/2” NPT thread TP48-I-NDI Certified SPD - 20mm ISO thread TP48-G-NDI Certified SPD - G 1/2” (BSP 1/2 inch) TP48-3-N-NDI Certified SPD - 1/2” NPT thread TP48-3-I-NDI Certified SPD - 20mm ISO thread TP48-3-G-NDI Certified SPD - G 1/2” - BSP 1/2 inch TP48-4-N-NDI Certified SPD - 1/2” NPT thread TP48-4-I-NDI Certified SPD - 20mm ISO thread TP48-4-G-NDI Certified SPD - G 1/2” - BSP 1/2 inch
