A design method for an EN 1434 heat-meter power source: comparing primary lithium, a NiMH pulse reservoir, supercapacitor and rechargeable lithium, budgeting average power across measurement and radio, and designing for a warm heating cabinet.
How an EN 1434 ultrasonic heat meter spends its battery - long sleep, periodic ultrasonic flow and paired-temperature measurement, and radio or optical readout - and where a NiMH pulse reservoir fits beside the primary lithium cell.
The validation matrix for an intrinsically safe gas-meter battery: EN 1359 and OIML R137 metrology, MID examination, ATEX intrinsic safety, ingress and temperature, IEC 62133-1 and UN 38.3, plus a valve-pulse and ageing programme.
A design route for an intrinsically safe gas-meter power source: comparing Li-SOCl2, Li-MnO2, a NiMH pulse reservoir, supercapacitor and Li-ion, budgeting the ten-year current and the valve pulse, and designing within ATEX energy limits.
The battery duty of an ATEX smart gas meter under EN 1359 and OIML R137 - years of microamp sleep, daily NB-IoT reporting and an occasional but safety-critical motorised shut-off valve pulse - and the role of a NiMH pulse reservoir.
The validation matrix behind a ten-year meter battery: ISO 4064 and OIML R49 metrological continuity, MID type examination, IP68 ingress, IEC 62133-1 cell safety, UN 38.3 transport and a pulse-cycling and ageing programme for a NiMH pulse-assist layer.
A design method for the meter power source: comparing Li-SOCl2, Li-MnO2, a NiMH pulse-assist hybrid, supercapacitor and rechargeable Li-ion, building the microamp-to-milliamp energy budget, and sizing the pulse reservoir for NB-IoT and valve loads.
The extreme duty cycle of an IP68 smart water meter under ISO 4064 and OIML R49 - years of microampere sleep, millisecond measurements and brief radio bursts - and where a NiMH pulse-assist cell fits beside the primary lithium battery.
