Introducción
This manual provides detailed instructions for the operation and maintenance of the Traceable Four-Channel Alarm Timer, Model 90225-35. This device is designed for laboratory use, offering precise timing capabilities across four independent channels for various applications.
Características
- Calibrated Four-Channel Alarm Timer for Laboratory Use
- Memory returns display to previously programmed countdown time with touch of a button
- Extra-loud alarms sound for 1 minute
- Includes NIST-Traceable certificate from our A2LA accredited (1750.01) calibration laboratory
Configuración
Instalación de la batería
The timer operates on standard batteries. To install or replace batteries:
- Localice el compartimiento de la batería en la parte posterior de la unidad.
- Abra la tapa del compartimento.
- Inserte pilas nuevas, observando la polaridad correcta (+/-) como se indica dentro del compartimento.
- Cierre bien la tapa del compartimento de la batería.

Imagen: Trasera view of the Traceable Four-Channel Alarm Timer, highlighting the circular battery compartment cover on the right side.
Encendido inicial
Upon first power-on or after battery replacement, the display will show the current time or default to 0:00:00. The timer is now ready for operation.
Instrucciones de funcionamiento
Encimaview de Controles

Imagen: Frente view of the timer, displaying the LCD screen and all control buttons. Buttons include T1, T2, T3, T4, CLOCK at the top, and H, M, S, C, START STOP at the bottom.
The timer features several buttons for various functions:
- T1, T2, T3, T4: Selects the desired timer channel.
- RELOJ: Toggles between clock display and timer display, and used for setting the clock.
- H (Hours): Sets hours for countdown/count-up.
- M (Minutes): Sets minutes for countdown/count-up.
- S (Seconds): Sets seconds for countdown/count-up.
- C (Claro): Clears the set time for the selected channel.
- INICIO / PARO: Starts or stops the selected timer.

Image: Close-up of the 'H' (Hours) and 'M' (Minutes) buttons, which are used for setting time values.

Image: Close-up of the 'START STOP' button, used to initiate or pause timing functions.

Image: Close-up of the 'CLOCK' button, used for setting and viewing la hora actual.
Configurar un temporizador de cuenta regresiva
- Press one of the channel buttons (T1, T2, T3, or T4) to select the desired timer. The display will show the selected channel indicator.
- Presione el H, M, y S buttons to set the desired countdown time. Each press increments the value. Hold the button for rapid increment.
- Presione el INICIAR/DETENER Botón para iniciar la cuenta regresiva.
- When the countdown reaches zero, an extra-loud alarm will sound for 1 minute.
- Para detener la alarma, presione cualquier botón.
- To recall the previously programmed countdown time for a channel, press the corresponding channel button (T1-T4) after the timer has stopped.
Using as a Count-Up Timer (Stopwatch)
- Press one of the channel buttons (T1, T2, T3, or T4) to select the desired timer.
- Ensure the selected channel is cleared (display shows 0:00:00). If not, press the C botón.
- Presione el INICIAR/DETENER Botón para comenzar a contar hacia arriba.
- Presione el INICIAR/DETENER Presione nuevamente el botón para pausar el conteo progresivo.
- Presione el C button to clear the count-up time.
Ajuste del reloj
- Mantenga pulsado el RELOJ botón hasta que la pantalla de la hora comience a parpadear.
- Utilice el H, M, y S botones para configurar la hora actual.
- Presione el RELOJ button again to confirm and exit clock setting mode.
Mantenimiento
Limpieza
Limpie el temporizador con un paño suave yamp Paño. No utilice limpiadores abrasivos ni sumerja la unidad en agua.
Reemplazo de batería
When the display dims or the alarm weakens, it is time to replace the batteries. Refer to the "Battery Installation" section under Setup for instructions.
Solución de problemas
El temporizador no responde
- Verifique la instalación de la batería y asegúrese de que las baterías estén nuevas.
- Presione el C button to clear any previous settings.
Alarm is too quiet or not sounding
- Reemplace las baterías.
- Ensure the timer is not in a location where the sound is muffled.
La pantalla está en blanco o errática
- Reemplace las baterías.
- Si el problema persiste después de reemplazar la batería, comuníquese con el servicio de atención al cliente.
Presupuesto
| Característica | Detalle |
|---|---|
| Número de modelo | 90225-35 |
| Marca | TRAZABLE |
| Número de canales | 4 |
| Dimensiones del paquete | 4 x 3.5 x 1.2 pulgadas |
| Peso del artículo | 0.009 onzas (0.26 gramos) |
| Color | Negro |
| Fabricante | Cole-Parmer |
| Primero disponible | 31 de enero de 2022 |
Garantía y soporte
This product comes with a NIST-Traceable certificate, ensuring its calibration accuracy. For specific warranty details or technical support, please refer to the documentation included with your purchase or contact Cole-Parmer customer service.
For additional information or support, please visit the manufacturer's websitio o comuníquese con su departamento de servicio al cliente.





