Industrial Electronic Digital Timers

Electronic Timer Frequently Asked Questions

What's the difference between an electronic timer and an electronic counter?

A counter processes a pulse train, counting pulses or computing a rate from their frequency. A timer instead measures duration — the elapsed time between two events, whether a single interval, an accumulated total, or a repeating cycle period. A counter answers "how many" or "how fast"; a timer answers "how long."

Can the stopwatch/timer configuration accumulate time across multiple start/stop cycles, or only time one interval?

It can do either, depending on configuration — single event timing captures one interval from a start signal to a stop signal, while accumulated event timing sums duration across multiple repeated start/stop cycles into a running total.

How is time interval of periodic events different from basic stopwatch timing?

Basic stopwatch timing captures a single, typically non-repeating interval. Periodic event timing measures the duration of a recurring cycle — the time between one occurrence of a repeating event and the next — which is built for monitoring the rhythm or consistency of an ongoing process rather than a one-off measurement.

What frequency range does the duty cycle/PWM configuration cover?

This configuration analyzes pulse-width-modulated signals up to 1 MHz, computing the on/off ratio as a duty cycle percentage, which covers the PWM frequencies typically used in motor speed control and LED dimming circuits.

What is the serial input remote display configuration actually for?

It's a 6-digit display that receives its value over a serial connection (RS-232, RS-485, or Modbus) from another device rather than measuring a signal itself, functioning as a large, clear remote readout for a value another instrument or controller has already computed, from -999,999 to +999,999.

Can a timer trigger an alarm or control output based on elapsed time?

Yes, with the appropriate option board. A timer can drive relay outputs from configurable time-based setpoints and retransmit its reading as an analog output, serving as both an indicator and a simple time-based controller.

How precise is the timing resolution on these instruments?

Resolution depends on the specific configuration, but single and accumulated event timing on these platforms can resolve intervals down to a fraction of a microsecond, supporting applications from basic process timing to capturing very short, fast events.

Are these timers suited to continuous, 24/7 operations like conveyor systems?

Yes — the periodic event timing configuration in particular is built for exactly that kind of continuous, repeating-cycle monitoring, where consistent, drift-free timing matters over long, uninterrupted runs rather than a single isolated measurement.

Electronic Timer Questions From the Field

My accumulated timer's total doesn't match what I'd expect from counting cycles manually — what should I check?

Confirming the start and stop trigger conditions (such as signal edge or logic level) are configured to match exactly what the connected sensor or switch actually outputs is the first step, since a mismatch between the expected and actual trigger condition can cause extra or missed start/stop events that accumulate into an incorrect total over time.

My conveyor's periodic event timer shows cycle times drifting slightly over a long run — is that expected?

Some cycle-to-cycle variation is expected if the mechanical process itself isn't perfectly consistent, since the timer accurately reports real variation rather than introducing its own error; if the drift seems larger than the process itself should produce, checking for signal noise or a marginal trigger threshold on the input is the standard next step.

My duty cycle reading on a motor control circuit doesn't match what I'm seeing on a scope — what should I check?

Confirming both instruments are measuring the same point in the circuit and using the same definition of "on" (active-high vs. active-low) is the first step, since a duty cycle calculation depends entirely on which signal transitions are being counted as the start and end of the "on" period.

My serial-input remote display shows a frozen or stale value — what should I check?

Confirming the sending device is still actively transmitting on the expected serial protocol and address is the first step, since a remote display configuration shows whatever it last received and has no way to know the data source has stopped updating.

My timer's relay isn't triggering at the time setpoint I configured — what should I check?

Confirming the setpoint value and relay mode (normally open vs. normally closed) are configured as intended is the first step, since a relay that appears not to trigger is often configured correctly but for a different condition than expected.

My single-event timing reading seems to include extra time I didn't expect — what should I check?

Confirming the exact start and stop trigger points match where the physical event actually begins and ends is the first step, since an event timer measures precisely between its configured triggers, and a trigger set slightly before the true start or after the true end will add that extra time into the reading even though the timer itself is functioning correctly.

My PWM duty cycle reading jumps around at higher frequencies close to the 1 MHz limit — what should I check?

Confirming the signal being measured isn't degraded by cable length, noise, or signal rise/fall time limitations at that frequency is the first step, since signal integrity becomes more critical as frequency approaches the upper end of the instrument's rated range.